diff --git a/CHANGELOG.md b/CHANGELOG.md
index 0958dd41d5a84..f7aa083eb2bcb 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -120,6 +120,7 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 - Add additional handling in SearchTemplateRequest when simulate is set to true ([#11591](https://github.com/opensearch-project/OpenSearch/pull/11591))
 - Introduce cluster level setting `cluster.index.restrict.replication.type` to prevent replication type setting override during index creations([#11583](https://github.com/opensearch-project/OpenSearch/pull/11583))
 - Add match_only_text field that is optimized for storage by trading off positional queries performance ([#6836](https://github.com/opensearch-project/OpenSearch/pull/11039))
+- Introduce new feature flag "WRITEABLE_REMOTE_INDEX" to gate the writeable remote index functionality ([#11717](https://github.com/opensearch-project/OpenSearch/pull/11170))
 
 ### Dependencies
 - Bumps jetty version to 9.4.52.v20230823 to fix GMS-2023-1857 ([#9822](https://github.com/opensearch-project/OpenSearch/pull/9822))
diff --git a/server/src/main/java/org/opensearch/common/settings/FeatureFlagSettings.java b/server/src/main/java/org/opensearch/common/settings/FeatureFlagSettings.java
index 387b0c9753574..d3285c379bcc4 100644
--- a/server/src/main/java/org/opensearch/common/settings/FeatureFlagSettings.java
+++ b/server/src/main/java/org/opensearch/common/settings/FeatureFlagSettings.java
@@ -40,7 +40,8 @@ protected FeatureFlagSettings(
                 FeatureFlags.IDENTITY_SETTING,
                 FeatureFlags.CONCURRENT_SEGMENT_SEARCH_SETTING,
                 FeatureFlags.TELEMETRY_SETTING,
-                FeatureFlags.DATETIME_FORMATTER_CACHING_SETTING
+                FeatureFlags.DATETIME_FORMATTER_CACHING_SETTING,
+                FeatureFlags.WRITEABLE_REMOTE_INDEX_SETTING
             )
         )
     );
diff --git a/server/src/main/java/org/opensearch/common/util/FeatureFlags.java b/server/src/main/java/org/opensearch/common/util/FeatureFlags.java
index 4e9b417e3433b..c54772caa574b 100644
--- a/server/src/main/java/org/opensearch/common/util/FeatureFlags.java
+++ b/server/src/main/java/org/opensearch/common/util/FeatureFlags.java
@@ -60,6 +60,12 @@ public class FeatureFlags {
      */
     public static final String DATETIME_FORMATTER_CACHING = "opensearch.experimental.optimization.datetime_formatter_caching.enabled";
 
+    /**
+     * Gates the functionality of writeable remote index
+     * Once the feature is ready for release, this feature flag can be removed.
+     */
+    public static final String WRITEABLE_REMOTE_INDEX = "opensearch.experimental.feature.writeable_remote_index.enabled";
+
     /**
      * Should store the settings from opensearch.yml.
      */
@@ -122,4 +128,10 @@ public static boolean isEnabled(Setting<Boolean> featureFlag) {
         true,
         Property.NodeScope
     );
+
+    public static final Setting<Boolean> WRITEABLE_REMOTE_INDEX_SETTING = Setting.boolSetting(
+        WRITEABLE_REMOTE_INDEX,
+        false,
+        Property.NodeScope
+    );
 }