MINOR: [Release] Update versions for 18.0.0
diff --git a/c_glib/meson.build b/c_glib/meson.build
index 214c577..37182c7 100644
--- a/c_glib/meson.build
+++ b/c_glib/meson.build
@@ -35,7 +35,7 @@
         #   * 22.04: 0.61.2
         meson_version: '>=0.53.2')
 
-version = '18.0.0-SNAPSHOT'
+version = '18.0.0'
 if version.endswith('-SNAPSHOT')
   version_numbers = version.split('-')[0].split('.')
   version_tag = version.split('-')[1]
diff --git a/c_glib/vcpkg.json b/c_glib/vcpkg.json
index 3941edb..6c411f7 100644
--- a/c_glib/vcpkg.json
+++ b/c_glib/vcpkg.json
@@ -1,6 +1,6 @@
 {
   "name": "arrow-glib",
-  "version-string": "18.0.0-SNAPSHOT",
+  "version-string": "18.0.0",
   "dependencies": [
     "glib",
     "gobject-introspection",
diff --git a/ci/scripts/PKGBUILD b/ci/scripts/PKGBUILD
index ed68faa..177c198 100644
--- a/ci/scripts/PKGBUILD
+++ b/ci/scripts/PKGBUILD
@@ -18,7 +18,7 @@
 _realname=arrow
 pkgbase=mingw-w64-${_realname}
 pkgname="${MINGW_PACKAGE_PREFIX}-${_realname}"
-pkgver=17.0.0.9000
+pkgver=18.0.0
 pkgrel=8000
 pkgdesc="Apache Arrow is a cross-language development platform for in-memory data (mingw-w64)"
 arch=("any")
diff --git a/cpp/CMakeLists.txt b/cpp/CMakeLists.txt
index a40afd0..b9689d6 100644
--- a/cpp/CMakeLists.txt
+++ b/cpp/CMakeLists.txt
@@ -79,7 +79,7 @@
   cmake_policy(SET CMP0170 NEW)
 endif()
 
-set(ARROW_VERSION "18.0.0-SNAPSHOT")
+set(ARROW_VERSION "18.0.0")
 
 string(REGEX MATCH "^[0-9]+\\.[0-9]+\\.[0-9]+" ARROW_BASE_VERSION "${ARROW_VERSION}")
 
diff --git a/cpp/vcpkg.json b/cpp/vcpkg.json
index 103e678..865e7b2 100644
--- a/cpp/vcpkg.json
+++ b/cpp/vcpkg.json
@@ -1,6 +1,6 @@
 {
   "name": "arrow",
-  "version-string": "18.0.0-SNAPSHOT",
+  "version-string": "18.0.0",
   "dependencies": [
     "abseil",
     {
diff --git a/csharp/Directory.Build.props b/csharp/Directory.Build.props
index 43c9323..03c2f3a 100644
--- a/csharp/Directory.Build.props
+++ b/csharp/Directory.Build.props
@@ -29,7 +29,7 @@
     <Product>Apache Arrow library</Product>
     <Copyright>Copyright 2016-2024 The Apache Software Foundation</Copyright>
     <Company>The Apache Software Foundation</Company>
-    <Version>18.0.0-SNAPSHOT</Version>
+    <Version>18.0.0</Version>
   </PropertyGroup>
 
   <PropertyGroup>
diff --git a/dev/tasks/homebrew-formulae/apache-arrow-glib.rb b/dev/tasks/homebrew-formulae/apache-arrow-glib.rb
index 6bcae64..877dcec 100644
--- a/dev/tasks/homebrew-formulae/apache-arrow-glib.rb
+++ b/dev/tasks/homebrew-formulae/apache-arrow-glib.rb
@@ -29,7 +29,7 @@
 class ApacheArrowGlib < Formula
   desc "GLib bindings for Apache Arrow"
   homepage "https://arrow.apache.org/"
-  url "https://www.apache.org/dyn/closer.lua?path=arrow/arrow-18.0.0-SNAPSHOT/apache-arrow-18.0.0-SNAPSHOT.tar.gz"
+  url "https://www.apache.org/dyn/closer.lua?path=arrow/arrow-18.0.0/apache-arrow-18.0.0.tar.gz"
   sha256 "9948ddb6d4798b51552d0dca3252dd6e3a7d0f9702714fc6f5a1b59397ce1d28"
   license "Apache-2.0"
   head "https://github.com/apache/arrow.git", branch: "main"
diff --git a/dev/tasks/homebrew-formulae/apache-arrow.rb b/dev/tasks/homebrew-formulae/apache-arrow.rb
index 955dfa0..1414deb 100644
--- a/dev/tasks/homebrew-formulae/apache-arrow.rb
+++ b/dev/tasks/homebrew-formulae/apache-arrow.rb
@@ -29,7 +29,7 @@
 class ApacheArrow < Formula
   desc "Columnar in-memory analytics layer designed to accelerate big data"
   homepage "https://arrow.apache.org/"
-  url "https://www.apache.org/dyn/closer.lua?path=arrow/arrow-18.0.0-SNAPSHOT/apache-arrow-18.0.0-SNAPSHOT.tar.gz"
+  url "https://www.apache.org/dyn/closer.lua?path=arrow/arrow-18.0.0/apache-arrow-18.0.0.tar.gz"
   sha256 "9948ddb6d4798b51552d0dca3252dd6e3a7d0f9702714fc6f5a1b59397ce1d28"
   license "Apache-2.0"
   head "https://github.com/apache/arrow.git", branch: "main"
diff --git a/docs/source/_static/versions.json b/docs/source/_static/versions.json
index 6a684b5..7598072 100644
--- a/docs/source/_static/versions.json
+++ b/docs/source/_static/versions.json
@@ -1,16 +1,21 @@
 [
     {
-        "name": "18.0 (dev)",
+        "name": "19.0 (dev)",
         "version": "dev/",
         "url": "https://arrow.apache.org/docs/dev/"
     },
     {
-        "name": "17.0 (stable)",
+        "name": "18.0 (stable)",
         "version": "",
         "url": "https://arrow.apache.org/docs/",
         "preferred": true
     },
     {
+        "name": "17.0",
+        "version": "17.0/",
+        "url": "https://arrow.apache.org/docs/17.0/"
+    },
+    {
         "name": "16.1",
         "version": "16.1/",
         "url": "https://arrow.apache.org/docs/16.1/"
diff --git a/java/adapter/avro/pom.xml b/java/adapter/avro/pom.xml
index 2c02e72..9ad79cf 100644
--- a/java/adapter/avro/pom.xml
+++ b/java/adapter/avro/pom.xml
@@ -23,7 +23,7 @@
   <parent>
     <groupId>org.apache.arrow</groupId>
     <artifactId>arrow-java-root</artifactId>
-    <version>18.0.0-SNAPSHOT</version>
+    <version>18.0.0</version>
     <relativePath>../../pom.xml</relativePath>
   </parent>
 
diff --git a/java/adapter/jdbc/pom.xml b/java/adapter/jdbc/pom.xml
index 5ebb408..eab47be 100644
--- a/java/adapter/jdbc/pom.xml
+++ b/java/adapter/jdbc/pom.xml
@@ -23,7 +23,7 @@
   <parent>
     <groupId>org.apache.arrow</groupId>
     <artifactId>arrow-java-root</artifactId>
-    <version>18.0.0-SNAPSHOT</version>
+    <version>18.0.0</version>
     <relativePath>../../pom.xml</relativePath>
   </parent>
 
diff --git a/java/adapter/orc/pom.xml b/java/adapter/orc/pom.xml
index f6e7b02..455021f 100644
--- a/java/adapter/orc/pom.xml
+++ b/java/adapter/orc/pom.xml
@@ -23,7 +23,7 @@
   <parent>
     <groupId>org.apache.arrow</groupId>
     <artifactId>arrow-java-root</artifactId>
-    <version>18.0.0-SNAPSHOT</version>
+    <version>18.0.0</version>
     <relativePath>../../pom.xml</relativePath>
   </parent>
 
diff --git a/java/algorithm/pom.xml b/java/algorithm/pom.xml
index 6971b53..f8def06 100644
--- a/java/algorithm/pom.xml
+++ b/java/algorithm/pom.xml
@@ -22,7 +22,7 @@
   <parent>
     <groupId>org.apache.arrow</groupId>
     <artifactId>arrow-java-root</artifactId>
-    <version>18.0.0-SNAPSHOT</version>
+    <version>18.0.0</version>
   </parent>
   <artifactId>arrow-algorithm</artifactId>
   <name>Arrow Algorithms</name>
diff --git a/java/bom/pom.xml b/java/bom/pom.xml
index ce05f25..c3c3803 100644
--- a/java/bom/pom.xml
+++ b/java/bom/pom.xml
@@ -29,7 +29,7 @@
 
   <groupId>org.apache.arrow</groupId>
   <artifactId>arrow-bom</artifactId>
-  <version>18.0.0-SNAPSHOT</version>
+  <version>18.0.0</version>
   <packaging>pom</packaging>
 
   <name>Arrow Bill of Materials</name>
@@ -68,7 +68,7 @@
   <scm child.scm.connection.inherit.append.path="false" child.scm.developerConnection.inherit.append.path="false" child.scm.url.inherit.append.path="false">
     <connection>scm:git:https://github.com/apache/arrow.git</connection>
     <developerConnection>scm:git:https://github.com/apache/arrow.git</developerConnection>
-    <tag>main</tag>
+    <tag>apache-arrow-18.0.0</tag>
     <url>https://github.com/apache/arrow/tree/${project.scm.tag}</url>
   </scm>
 
diff --git a/java/c/pom.xml b/java/c/pom.xml
index fe57bd2..3c72e3f 100644
--- a/java/c/pom.xml
+++ b/java/c/pom.xml
@@ -22,7 +22,7 @@
   <parent>
     <groupId>org.apache.arrow</groupId>
     <artifactId>arrow-java-root</artifactId>
-    <version>18.0.0-SNAPSHOT</version>
+    <version>18.0.0</version>
   </parent>
 
   <artifactId>arrow-c-data</artifactId>
diff --git a/java/compression/pom.xml b/java/compression/pom.xml
index 3af668c..3e3a4dc 100644
--- a/java/compression/pom.xml
+++ b/java/compression/pom.xml
@@ -22,7 +22,7 @@
   <parent>
     <groupId>org.apache.arrow</groupId>
     <artifactId>arrow-java-root</artifactId>
-    <version>18.0.0-SNAPSHOT</version>
+    <version>18.0.0</version>
   </parent>
   <artifactId>arrow-compression</artifactId>
   <name>Arrow Compression</name>
diff --git a/java/dataset/pom.xml b/java/dataset/pom.xml
index ec90e39..4874a33 100644
--- a/java/dataset/pom.xml
+++ b/java/dataset/pom.xml
@@ -22,7 +22,7 @@
   <parent>
     <groupId>org.apache.arrow</groupId>
     <artifactId>arrow-java-root</artifactId>
-    <version>18.0.0-SNAPSHOT</version>
+    <version>18.0.0</version>
   </parent>
 
   <artifactId>arrow-dataset</artifactId>
diff --git a/java/flight/flight-core/pom.xml b/java/flight/flight-core/pom.xml
index 74767fd..ee8fa62 100644
--- a/java/flight/flight-core/pom.xml
+++ b/java/flight/flight-core/pom.xml
@@ -22,7 +22,7 @@
   <parent>
     <groupId>org.apache.arrow</groupId>
     <artifactId>arrow-flight</artifactId>
-    <version>18.0.0-SNAPSHOT</version>
+    <version>18.0.0</version>
   </parent>
 
   <artifactId>flight-core</artifactId>
diff --git a/java/flight/flight-integration-tests/pom.xml b/java/flight/flight-integration-tests/pom.xml
index 7da5156..f9d2151 100644
--- a/java/flight/flight-integration-tests/pom.xml
+++ b/java/flight/flight-integration-tests/pom.xml
@@ -22,7 +22,7 @@
   <parent>
     <groupId>org.apache.arrow</groupId>
     <artifactId>arrow-flight</artifactId>
-    <version>18.0.0-SNAPSHOT</version>
+    <version>18.0.0</version>
   </parent>
 
   <artifactId>flight-integration-tests</artifactId>
diff --git a/java/flight/flight-sql-jdbc-core/pom.xml b/java/flight/flight-sql-jdbc-core/pom.xml
index eb0ce04..84244a6 100644
--- a/java/flight/flight-sql-jdbc-core/pom.xml
+++ b/java/flight/flight-sql-jdbc-core/pom.xml
@@ -22,7 +22,7 @@
   <parent>
     <groupId>org.apache.arrow</groupId>
     <artifactId>arrow-flight</artifactId>
-    <version>18.0.0-SNAPSHOT</version>
+    <version>18.0.0</version>
   </parent>
 
   <artifactId>flight-sql-jdbc-core</artifactId>
diff --git a/java/flight/flight-sql-jdbc-driver/pom.xml b/java/flight/flight-sql-jdbc-driver/pom.xml
index 148319e..dce4b5b 100644
--- a/java/flight/flight-sql-jdbc-driver/pom.xml
+++ b/java/flight/flight-sql-jdbc-driver/pom.xml
@@ -22,7 +22,7 @@
   <parent>
     <groupId>org.apache.arrow</groupId>
     <artifactId>arrow-flight</artifactId>
-    <version>18.0.0-SNAPSHOT</version>
+    <version>18.0.0</version>
   </parent>
 
   <artifactId>flight-sql-jdbc-driver</artifactId>
diff --git a/java/flight/flight-sql/pom.xml b/java/flight/flight-sql/pom.xml
index 021c1e6..5d75f40 100644
--- a/java/flight/flight-sql/pom.xml
+++ b/java/flight/flight-sql/pom.xml
@@ -22,7 +22,7 @@
   <parent>
     <groupId>org.apache.arrow</groupId>
     <artifactId>arrow-flight</artifactId>
-    <version>18.0.0-SNAPSHOT</version>
+    <version>18.0.0</version>
   </parent>
 
   <artifactId>flight-sql</artifactId>
diff --git a/java/flight/pom.xml b/java/flight/pom.xml
index 55511eb..bdbf922 100644
--- a/java/flight/pom.xml
+++ b/java/flight/pom.xml
@@ -22,7 +22,7 @@
   <parent>
     <groupId>org.apache.arrow</groupId>
     <artifactId>arrow-java-root</artifactId>
-    <version>18.0.0-SNAPSHOT</version>
+    <version>18.0.0</version>
   </parent>
   <artifactId>arrow-flight</artifactId>
 
diff --git a/java/format/pom.xml b/java/format/pom.xml
index f767215..3b40060 100644
--- a/java/format/pom.xml
+++ b/java/format/pom.xml
@@ -23,7 +23,7 @@
   <parent>
     <groupId>org.apache.arrow</groupId>
     <artifactId>arrow-java-root</artifactId>
-    <version>18.0.0-SNAPSHOT</version>
+    <version>18.0.0</version>
   </parent>
 
   <artifactId>arrow-format</artifactId>
diff --git a/java/gandiva/pom.xml b/java/gandiva/pom.xml
index 70bde08..1b85123 100644
--- a/java/gandiva/pom.xml
+++ b/java/gandiva/pom.xml
@@ -22,7 +22,7 @@
   <parent>
     <groupId>org.apache.arrow</groupId>
     <artifactId>arrow-java-root</artifactId>
-    <version>18.0.0-SNAPSHOT</version>
+    <version>18.0.0</version>
   </parent>
 
   <groupId>org.apache.arrow.gandiva</groupId>
diff --git a/java/memory/memory-core/pom.xml b/java/memory/memory-core/pom.xml
index 9b24cee..488514a 100644
--- a/java/memory/memory-core/pom.xml
+++ b/java/memory/memory-core/pom.xml
@@ -22,7 +22,7 @@
   <parent>
     <groupId>org.apache.arrow</groupId>
     <artifactId>arrow-memory</artifactId>
-    <version>18.0.0-SNAPSHOT</version>
+    <version>18.0.0</version>
   </parent>
 
   <artifactId>arrow-memory-core</artifactId>
diff --git a/java/memory/memory-netty-buffer-patch/pom.xml b/java/memory/memory-netty-buffer-patch/pom.xml
index 2e70279..cdaafc8 100644
--- a/java/memory/memory-netty-buffer-patch/pom.xml
+++ b/java/memory/memory-netty-buffer-patch/pom.xml
@@ -22,7 +22,7 @@
   <parent>
     <groupId>org.apache.arrow</groupId>
     <artifactId>arrow-memory</artifactId>
-    <version>18.0.0-SNAPSHOT</version>
+    <version>18.0.0</version>
   </parent>
 
   <artifactId>arrow-memory-netty-buffer-patch</artifactId>
diff --git a/java/memory/memory-netty/pom.xml b/java/memory/memory-netty/pom.xml
index 6cf573d..989cb7d 100644
--- a/java/memory/memory-netty/pom.xml
+++ b/java/memory/memory-netty/pom.xml
@@ -22,7 +22,7 @@
   <parent>
     <groupId>org.apache.arrow</groupId>
     <artifactId>arrow-memory</artifactId>
-    <version>18.0.0-SNAPSHOT</version>
+    <version>18.0.0</version>
   </parent>
 
   <artifactId>arrow-memory-netty</artifactId>
diff --git a/java/memory/memory-unsafe/pom.xml b/java/memory/memory-unsafe/pom.xml
index 6bba222..635e29c 100644
--- a/java/memory/memory-unsafe/pom.xml
+++ b/java/memory/memory-unsafe/pom.xml
@@ -22,7 +22,7 @@
   <parent>
     <groupId>org.apache.arrow</groupId>
     <artifactId>arrow-memory</artifactId>
-    <version>18.0.0-SNAPSHOT</version>
+    <version>18.0.0</version>
   </parent>
 
   <artifactId>arrow-memory-unsafe</artifactId>
diff --git a/java/memory/pom.xml b/java/memory/pom.xml
index 0ca357b..ca32105 100644
--- a/java/memory/pom.xml
+++ b/java/memory/pom.xml
@@ -22,7 +22,7 @@
   <parent>
     <groupId>org.apache.arrow</groupId>
     <artifactId>arrow-java-root</artifactId>
-    <version>18.0.0-SNAPSHOT</version>
+    <version>18.0.0</version>
   </parent>
   <artifactId>arrow-memory</artifactId>
   <packaging>pom</packaging>
diff --git a/java/performance/pom.xml b/java/performance/pom.xml
index 9f4df1f..d901ed1 100644
--- a/java/performance/pom.xml
+++ b/java/performance/pom.xml
@@ -22,7 +22,7 @@
   <parent>
     <groupId>org.apache.arrow</groupId>
     <artifactId>arrow-java-root</artifactId>
-    <version>18.0.0-SNAPSHOT</version>
+    <version>18.0.0</version>
   </parent>
   <artifactId>arrow-performance</artifactId>
   <packaging>jar</packaging>
diff --git a/java/pom.xml b/java/pom.xml
index c956087..2308a0d 100644
--- a/java/pom.xml
+++ b/java/pom.xml
@@ -28,7 +28,7 @@
 
   <groupId>org.apache.arrow</groupId>
   <artifactId>arrow-java-root</artifactId>
-  <version>18.0.0-SNAPSHOT</version>
+  <version>18.0.0</version>
   <packaging>pom</packaging>
 
   <name>Apache Arrow Java Root POM</name>
@@ -81,7 +81,7 @@
   <scm child.scm.connection.inherit.append.path="false" child.scm.developerConnection.inherit.append.path="false" child.scm.url.inherit.append.path="false">
     <connection>scm:git:https://github.com/apache/arrow.git</connection>
     <developerConnection>scm:git:https://github.com/apache/arrow.git</developerConnection>
-    <tag>main</tag>
+    <tag>apache-arrow-18.0.0</tag>
     <url>https://github.com/apache/arrow/tree/${project.scm.tag}</url>
   </scm>
 
diff --git a/java/tools/pom.xml b/java/tools/pom.xml
index d261496..2997d3e 100644
--- a/java/tools/pom.xml
+++ b/java/tools/pom.xml
@@ -22,7 +22,7 @@
   <parent>
     <groupId>org.apache.arrow</groupId>
     <artifactId>arrow-java-root</artifactId>
-    <version>18.0.0-SNAPSHOT</version>
+    <version>18.0.0</version>
   </parent>
   <artifactId>arrow-tools</artifactId>
   <name>Arrow Tools</name>
diff --git a/java/vector/pom.xml b/java/vector/pom.xml
index eb0e395..6db3903 100644
--- a/java/vector/pom.xml
+++ b/java/vector/pom.xml
@@ -22,7 +22,7 @@
   <parent>
     <groupId>org.apache.arrow</groupId>
     <artifactId>arrow-java-root</artifactId>
-    <version>18.0.0-SNAPSHOT</version>
+    <version>18.0.0</version>
   </parent>
   <artifactId>arrow-vector</artifactId>
   <name>Arrow Vectors</name>
diff --git a/js/package.json b/js/package.json
index 643f049..6dabbfe 100644
--- a/js/package.json
+++ b/js/package.json
@@ -120,5 +120,5 @@
   "engines": {
     "node": ">=12.0"
   },
-  "version": "18.0.0-SNAPSHOT"
+  "version": "18.0.0"
 }
diff --git a/matlab/CMakeLists.txt b/matlab/CMakeLists.txt
index 91c186a..408f75d 100644
--- a/matlab/CMakeLists.txt
+++ b/matlab/CMakeLists.txt
@@ -100,7 +100,7 @@
 
 set(CMAKE_CXX_STANDARD 17)
 
-set(MLARROW_VERSION "18.0.0-SNAPSHOT")
+set(MLARROW_VERSION "18.0.0")
 string(REGEX MATCH "^[0-9]+\\.[0-9]+\\.[0-9]+" MLARROW_BASE_VERSION "${MLARROW_VERSION}")
 
 project(mlarrow VERSION "${MLARROW_BASE_VERSION}")
diff --git a/python/CMakeLists.txt b/python/CMakeLists.txt
index 710735a..3caf62d 100644
--- a/python/CMakeLists.txt
+++ b/python/CMakeLists.txt
@@ -28,7 +28,7 @@
 # which in turn meant that Py_GIL_DISABLED was not set.
 set(CMAKE_NO_SYSTEM_FROM_IMPORTED ON)
 
-set(PYARROW_VERSION "18.0.0-SNAPSHOT")
+set(PYARROW_VERSION "18.0.0")
 string(REGEX MATCH "^[0-9]+\\.[0-9]+\\.[0-9]+" PYARROW_BASE_VERSION "${PYARROW_VERSION}")
 
 # Running from a Python sdist tarball
diff --git a/python/pyproject.toml b/python/pyproject.toml
index 8748fe4..fb69594 100644
--- a/python/pyproject.toml
+++ b/python/pyproject.toml
@@ -81,4 +81,4 @@
 version_file = 'pyarrow/_generated_version.py'
 version_scheme = 'guess-next-dev'
 git_describe_command = 'git describe --dirty --tags --long --match "apache-arrow-[0-9]*.*"'
-fallback_version = '18.0.0a0'
+fallback_version = '18.0.0'
diff --git a/r/DESCRIPTION b/r/DESCRIPTION
index ff74c56..3f6fb4b 100644
--- a/r/DESCRIPTION
+++ b/r/DESCRIPTION
@@ -1,6 +1,6 @@
 Package: arrow
 Title: Integration to 'Apache' 'Arrow'
-Version: 17.0.0.9000
+Version: 18.0.0
 Authors@R: c(
     person("Neal", "Richardson", email = "neal.p.richardson@gmail.com", role = c("aut")),
     person("Ian", "Cook", email = "ianmcook@gmail.com", role = c("aut")),
diff --git a/r/NEWS.md b/r/NEWS.md
index b9568af..e365fae 100644
--- a/r/NEWS.md
+++ b/r/NEWS.md
@@ -17,7 +17,7 @@
   under the License.
 -->
 
-# arrow 17.0.0.9000
+# arrow 18.0.0
 
 # arrow 17.0.0
 
diff --git a/r/pkgdown/assets/versions.json b/r/pkgdown/assets/versions.json
index e8e26f2..cecbed7 100644
--- a/r/pkgdown/assets/versions.json
+++ b/r/pkgdown/assets/versions.json
@@ -1,13 +1,17 @@
 [
     {
-        "name": "17.0.0.9000 (dev)",
+        "name": "18.0.0.9000 (dev)",
         "version": "dev/"
     },
     {
-        "name": "17.0.0 (release)",
+        "name": "18.0.0 (release)",
         "version": ""
     },
     {
+        "name": "17.0.0",
+        "version": "17.0/"
+    },
+    {
         "name": "16.1.0",
         "version": "16.1/"
     },
diff --git a/ruby/red-arrow-cuda/lib/arrow-cuda/version.rb b/ruby/red-arrow-cuda/lib/arrow-cuda/version.rb
index 1fbbe88..06e39cf 100644
--- a/ruby/red-arrow-cuda/lib/arrow-cuda/version.rb
+++ b/ruby/red-arrow-cuda/lib/arrow-cuda/version.rb
@@ -16,7 +16,7 @@
 # under the License.
 
 module ArrowCUDA
-  VERSION = "18.0.0-SNAPSHOT"
+  VERSION = "18.0.0"
 
   module Version
     numbers, TAG = VERSION.split("-")
diff --git a/ruby/red-arrow-dataset/lib/arrow-dataset/version.rb b/ruby/red-arrow-dataset/lib/arrow-dataset/version.rb
index a9eae43..5c3e89f 100644
--- a/ruby/red-arrow-dataset/lib/arrow-dataset/version.rb
+++ b/ruby/red-arrow-dataset/lib/arrow-dataset/version.rb
@@ -16,7 +16,7 @@
 # under the License.
 
 module ArrowDataset
-  VERSION = "18.0.0-SNAPSHOT"
+  VERSION = "18.0.0"
 
   module Version
     numbers, TAG = VERSION.split("-")
diff --git a/ruby/red-arrow-flight-sql/lib/arrow-flight-sql/version.rb b/ruby/red-arrow-flight-sql/lib/arrow-flight-sql/version.rb
index f24688e..432fdc2 100644
--- a/ruby/red-arrow-flight-sql/lib/arrow-flight-sql/version.rb
+++ b/ruby/red-arrow-flight-sql/lib/arrow-flight-sql/version.rb
@@ -16,7 +16,7 @@
 # under the License.
 
 module ArrowFlightSQL
-  VERSION = "18.0.0-SNAPSHOT"
+  VERSION = "18.0.0"
 
   module Version
     numbers, TAG = VERSION.split("-")
diff --git a/ruby/red-arrow-flight/lib/arrow-flight/version.rb b/ruby/red-arrow-flight/lib/arrow-flight/version.rb
index 263f359..4d8ea4d 100644
--- a/ruby/red-arrow-flight/lib/arrow-flight/version.rb
+++ b/ruby/red-arrow-flight/lib/arrow-flight/version.rb
@@ -16,7 +16,7 @@
 # under the License.
 
 module ArrowFlight
-  VERSION = "18.0.0-SNAPSHOT"
+  VERSION = "18.0.0"
 
   module Version
     numbers, TAG = VERSION.split("-")
diff --git a/ruby/red-arrow/lib/arrow/version.rb b/ruby/red-arrow/lib/arrow/version.rb
index 42708a6..b4f117b 100644
--- a/ruby/red-arrow/lib/arrow/version.rb
+++ b/ruby/red-arrow/lib/arrow/version.rb
@@ -16,7 +16,7 @@
 # under the License.
 
 module Arrow
-  VERSION = "18.0.0-SNAPSHOT"
+  VERSION = "18.0.0"
 
   module Version
     numbers, TAG = VERSION.split("-")
diff --git a/ruby/red-gandiva/lib/gandiva/version.rb b/ruby/red-gandiva/lib/gandiva/version.rb
index 4a9f27a..ccf9ae8 100644
--- a/ruby/red-gandiva/lib/gandiva/version.rb
+++ b/ruby/red-gandiva/lib/gandiva/version.rb
@@ -16,7 +16,7 @@
 # under the License.
 
 module Gandiva
-  VERSION = "18.0.0-SNAPSHOT"
+  VERSION = "18.0.0"
 
   module Version
     numbers, TAG = VERSION.split("-")
diff --git a/ruby/red-parquet/lib/parquet/version.rb b/ruby/red-parquet/lib/parquet/version.rb
index ba66b2c..994e479 100644
--- a/ruby/red-parquet/lib/parquet/version.rb
+++ b/ruby/red-parquet/lib/parquet/version.rb
@@ -16,7 +16,7 @@
 # under the License.
 
 module Parquet
-  VERSION = "18.0.0-SNAPSHOT"
+  VERSION = "18.0.0"
 
   module Version
     numbers, TAG = VERSION.split("-")