diff --git a/dev/release/README.md b/dev/release/README.md
index 60d6473817..479783b5ec 100644
--- a/dev/release/README.md
+++ b/dev/release/README.md
@@ -174,7 +174,7 @@ The artifacts will be signed using the gpg key of the release manager and upload
 
 Note that installed GPG keys can be listed with `gpg --list-keys`. The gpg key is a 40 character hex string.
 
-Note: This script needs `xmllint` to be installed. On MacOS xmllint is available by default.
+Note: This script needs `xmllint` to be installed. On macOS xmllint is available by default.
 
 On Ubuntu `apt-get install -y libxml2-utils`
 
diff --git a/dev/release/publish-to-maven.sh b/dev/release/publish-to-maven.sh
index 7f252a2e3c..314b0855cf 100755
--- a/dev/release/publish-to-maven.sh
+++ b/dev/release/publish-to-maven.sh
@@ -129,7 +129,7 @@ do
 echo $GPG_PASSPHRASE | $GPG --passphrase-fd 0 --output $file.asc \
   --detach-sig --armour $file;
 if [ $(command -v md5) ]; then
-  # Available on OS X; -q to keep only hash
+  # Available on macOS; -q to keep only hash
   md5 -q $file > $file.md5
 else
   # Available on Linux; cut to keep only hash
diff --git a/docs/source/user-guide/installation.md b/docs/source/user-guide/installation.md
index 6e57407d9c..e3c8636856 100644
--- a/docs/source/user-guide/installation.md
+++ b/docs/source/user-guide/installation.md
@@ -26,7 +26,7 @@ Make sure the following requirements are met and software installed on your mach
 ### Supported Operating Systems
 
 - Linux
-- Apple OSX (Intel and Apple Silicon)
+- Apple macOS (Intel and Apple Silicon)
 
 ### Supported Spark Versions
 
@@ -55,7 +55,7 @@ Cloud Service Providers.
 
 ## Using a Published JAR File
 
-Comet jar files are available in [Maven Central](https://central.sonatype.com/namespace/org.apache.datafusion) for amd64 and arm64 architectures for Linux. For Apple OSX, it
+Comet jar files are available in [Maven Central](https://central.sonatype.com/namespace/org.apache.datafusion) for amd64 and arm64 architectures for Linux. For Apple macOS, it
 is currently necessary to build from source.
 
 Here are the direct links for downloading the Comet 0.7.0 jar file.