diff --git a/CHANGELOG.md b/CHANGELOG.md
index aee655541cca5..8720db81d2b57 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -8,6 +8,7 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 - Add explicit dependency to validatePom and generatePom tasks ([#12909](https://github.com/opensearch-project/OpenSearch/pull/12909))
 - [Concurrent Segment Search] Perform buildAggregation concurrently and support Composite Aggregations ([#12697](https://github.com/opensearch-project/OpenSearch/pull/12697))
 - Convert ingest processor supports ip type ([#12818](https://github.com/opensearch-project/OpenSearch/pull/12818))
+- Allow setting KEYSTORE_PASSWORD through env variable ([#12865](https://github.com/opensearch-project/OpenSearch/pull/12865))
 
 ### Dependencies
 - Bump `org.apache.commons:commons-configuration2` from 2.10.0 to 2.10.1 ([#12896](https://github.com/opensearch-project/OpenSearch/pull/12896))
diff --git a/distribution/src/bin/opensearch b/distribution/src/bin/opensearch
index 947d1167f79f2..8a3b0a009437f 100755
--- a/distribution/src/bin/opensearch
+++ b/distribution/src/bin/opensearch
@@ -36,14 +36,16 @@ fi
 
 # get keystore password before setting java options to avoid
 # conflicting GC configurations for the keystore tools
-unset KEYSTORE_PASSWORD
-KEYSTORE_PASSWORD=
 if [[ $CHECK_KEYSTORE = true ]] \
     && bin/opensearch-keystore has-passwd --silent
 then
-  if ! read -s -r -p "OpenSearch keystore password: " KEYSTORE_PASSWORD ; then
-    echo "Failed to read keystore password on console" 1>&2
-    exit 1
+  if [[ ! -z "${KEYSTORE_PASSWORD}" ]]; then
+    echo "Using value of KEYSTORE_PASSWORD from the environment"
+  else
+    if ! read -s -r -p "OpenSearch keystore password: " KEYSTORE_PASSWORD ; then
+      echo "Failed to read keystore password on console" 1>&2
+      exit 1
+    fi
   fi
 fi
 
diff --git a/distribution/src/bin/opensearch.bat b/distribution/src/bin/opensearch.bat
index cce21504c55b7..b7ecab24165fa 100644
--- a/distribution/src/bin/opensearch.bat
+++ b/distribution/src/bin/opensearch.bat
@@ -62,14 +62,17 @@ if not exist "%SERVICE_LOG_DIR%" (
 	mkdir "%SERVICE_LOG_DIR%"
 )
 
-SET KEYSTORE_PASSWORD=
 IF "%checkpassword%"=="Y" (
   CALL "%~dp0opensearch-keystore.bat" has-passwd --silent
   IF !ERRORLEVEL! EQU 0 (
-    SET /P KEYSTORE_PASSWORD=OpenSearch keystore password:
-    IF !ERRORLEVEL! NEQ 0 (
-      ECHO Failed to read keystore password on standard input
-      EXIT /B !ERRORLEVEL!
+    if defined KEYSTORE_PASSWORD (
+      ECHO Using value of KEYSTORE_PASSWORD from the environment
+    ) else (
+      SET /P KEYSTORE_PASSWORD=OpenSearch keystore password:
+      IF !ERRORLEVEL! NEQ 0 (
+        ECHO Failed to read keystore password on standard input
+        EXIT /B !ERRORLEVEL!
+      )
     )
   )
 )