diff --git a/CHANGELOG.md b/CHANGELOG.md
index abec0346b2..cb0b717d87 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,6 +4,7 @@ Inspired from [Keep a Changelog](https://keepachangelog.com/en/1.0.0/)
 ## [Unreleased 2.x]
 ### Added
 - Adds `queryImage` (query_image) field to `NeuralQuery`, following definition in ([Neural Query](https://opensearch.org/docs/latest/query-dsl/specialized/neural/)) ([#1137](https://github.com/opensearch-project/opensearch-java/pull/1138))
+- Adds `cancelAfterTimeInterval` to `SearchRequest` and `MsearchRequest` ([#1147](https://github.com/opensearch-project/opensearch-java/pull/1147))
 
 ### Dependencies
 
diff --git a/java-client/src/main/java/org/opensearch/client/opensearch/core/MsearchRequest.java b/java-client/src/main/java/org/opensearch/client/opensearch/core/MsearchRequest.java
index 931be38b15..a417915504 100644
--- a/java-client/src/main/java/org/opensearch/client/opensearch/core/MsearchRequest.java
+++ b/java-client/src/main/java/org/opensearch/client/opensearch/core/MsearchRequest.java
@@ -48,6 +48,7 @@
 import org.opensearch.client.opensearch._types.ExpandWildcard;
 import org.opensearch.client.opensearch._types.RequestBase;
 import org.opensearch.client.opensearch._types.SearchType;
+import org.opensearch.client.opensearch._types.Time;
 import org.opensearch.client.opensearch.core.msearch.RequestItem;
 import org.opensearch.client.transport.Endpoint;
 import org.opensearch.client.transport.endpoints.SimpleEndpoint;
@@ -66,6 +67,9 @@ public class MsearchRequest extends RequestBase implements NdJsonpSerializable,
     @Nullable
     private final Boolean allowNoIndices;
 
+    @Nullable
+    private final Time cancelAfterTimeInterval;
+
     @Nullable
     private final Boolean ccsMinimizeRoundtrips;
 
@@ -98,6 +102,7 @@ public class MsearchRequest extends RequestBase implements NdJsonpSerializable,
     private MsearchRequest(Builder builder) {
 
         this.allowNoIndices = builder.allowNoIndices;
+        this.cancelAfterTimeInterval = builder.cancelAfterTimeInterval;
         this.ccsMinimizeRoundtrips = builder.ccsMinimizeRoundtrips;
         this.expandWildcards = ApiTypeHelper.unmodifiable(builder.expandWildcards);
         this.ignoreThrottled = builder.ignoreThrottled;
@@ -134,6 +139,17 @@ public final Boolean allowNoIndices() {
         return this.allowNoIndices;
     }
 
+    /**
+     * The time after which the search request will be canceled.
+     * Request-level parameter takes precedence over cancel_after_time_interval cluster setting.
+     * <p>
+     * API name: {@code cancel_after_time_interval}
+     */
+    @Nullable
+    public final Time cancelAfterTimeInterval() {
+        return this.cancelAfterTimeInterval;
+    }
+
     /**
      * If true, network roundtrips between the coordinating node and remote clusters
      * are minimized for cross-cluster search requests.
@@ -256,6 +272,7 @@ public void serialize(JsonGenerator generator, JsonpMapper mapper) {
 
     public Builder toBuilder() {
         return new Builder().allowNoIndices(allowNoIndices)
+            .cancelAfterTimeInterval(cancelAfterTimeInterval)
             .ccsMinimizeRoundtrips(ccsMinimizeRoundtrips)
             .expandWildcards(expandWildcards)
             .ignoreThrottled(ignoreThrottled)
@@ -278,6 +295,9 @@ public static class Builder extends ObjectBuilderBase implements ObjectBuilder<M
         @Nullable
         private Boolean allowNoIndices;
 
+        @Nullable
+        private Time cancelAfterTimeInterval;
+
         @Nullable
         private Boolean ccsMinimizeRoundtrips;
 
@@ -321,6 +341,27 @@ public final Builder allowNoIndices(@Nullable Boolean value) {
             return this;
         }
 
+        /**
+         * The time after which the search request will be canceled.
+         * Request-level parameter takes precedence over cancel_after_time_interval cluster setting.
+         * <p>
+         * API name: {@code cancel_after_time_interval}
+         */
+        public final Builder cancelAfterTimeInterval(@Nullable Time value) {
+            this.cancelAfterTimeInterval = value;
+            return this;
+        }
+
+        /**
+         * The time after which the search request will be canceled.
+         * Request-level parameter takes precedence over cancel_after_time_interval cluster setting.
+         * <p>
+         * API name: {@code cancel_after_time_interval}
+         */
+        public final Builder cancelAfterTimeInterval(Function<Time.Builder, ObjectBuilder<Time>> fn) {
+            return this.cancelAfterTimeInterval(fn.apply(new Time.Builder()).build());
+        }
+
         /**
          * If true, network roundtrips between the coordinating node and remote clusters
          * are minimized for cross-cluster search requests.
@@ -540,6 +581,9 @@ public MsearchRequest build() {
         request -> {
             Map<String, String> params = new HashMap<>();
             params.put("typed_keys", "true");
+            if (request.cancelAfterTimeInterval != null) {
+                params.put("cancel_after_time_interval", request.cancelAfterTimeInterval._toJsonString());
+            }
             if (request.preFilterShardSize != null) {
                 params.put("pre_filter_shard_size", String.valueOf(request.preFilterShardSize));
             }
diff --git a/java-client/src/main/java/org/opensearch/client/opensearch/core/SearchRequest.java b/java-client/src/main/java/org/opensearch/client/opensearch/core/SearchRequest.java
index 424d3f1193..7937f30641 100644
--- a/java-client/src/main/java/org/opensearch/client/opensearch/core/SearchRequest.java
+++ b/java-client/src/main/java/org/opensearch/client/opensearch/core/SearchRequest.java
@@ -110,6 +110,9 @@ public class SearchRequest extends RequestBase implements PlainJsonSerializable
     @Nullable
     private final String pipeline;
 
+    @Nullable
+    private final Time cancelAfterTimeInterval;
+
     @Nullable
     private final FieldCollapse collapse;
 
@@ -246,6 +249,7 @@ private SearchRequest(Builder builder) {
         this.ccsMinimizeRoundtrips = builder.ccsMinimizeRoundtrips;
         this.phaseTook = builder.phaseTook;
         this.pipeline = builder.pipeline;
+        this.cancelAfterTimeInterval = builder.cancelAfterTimeInterval;
         this.collapse = builder.collapse;
         this.defaultOperator = builder.defaultOperator;
         this.df = builder.df;
@@ -405,6 +409,17 @@ public final String pipeline() {
         return this.pipeline;
     }
 
+    /**
+     * The time after which the search request will be canceled.
+     * Request-level parameter takes precedence over cancel_after_time_interval cluster setting.
+     * <p>
+     * API name: {@code cancel_after_time_interval}
+     */
+    @Nullable
+    public final Time cancelAfterTimeInterval() {
+        return this.cancelAfterTimeInterval;
+    }
+
     /**
      * API name: {@code collapse}
      */
@@ -1125,6 +1140,7 @@ public Builder toBuilder() {
             .ccsMinimizeRoundtrips(ccsMinimizeRoundtrips)
             .phaseTook(phaseTook)
             .pipeline(pipeline)
+            .cancelAfterTimeInterval(cancelAfterTimeInterval)
             .collapse(collapse)
             .defaultOperator(defaultOperator)
             .df(df)
@@ -1209,6 +1225,9 @@ public static class Builder extends ObjectBuilderBase implements ObjectBuilder<S
         @Nullable
         private String pipeline;
 
+        @Nullable
+        private Time cancelAfterTimeInterval;
+
         @Nullable
         private FieldCollapse collapse;
 
@@ -1483,6 +1502,27 @@ public final Builder pipeline(@Nullable String value) {
             return this;
         }
 
+        /**
+         * The time after which the search request will be canceled.
+         * Request-level parameter takes precedence over cancel_after_time_interval cluster setting.
+         * <p>
+         * API name: {@code cancel_after_time_interval}
+         */
+        public final Builder cancelAfterTimeInterval(@Nullable Time value) {
+            this.cancelAfterTimeInterval = value;
+            return this;
+        }
+
+        /**
+         * The time after which the search request will be canceled.
+         * Request-level parameter takes precedence over cancel_after_time_interval cluster setting.
+         * <p>
+         * API name: {@code cancel_after_time_interval}
+         */
+        public final Builder cancelAfterTimeInterval(Function<Time.Builder, ObjectBuilder<Time>> fn) {
+            return this.cancelAfterTimeInterval(fn.apply(new Time.Builder()).build());
+        }
+
         /**
          * API name: {@code collapse}
          */
@@ -2444,6 +2484,9 @@ protected static void setupSearchRequestDeserializer(ObjectDeserializer<SearchRe
             if (request.scroll != null) {
                 params.put("scroll", request.scroll._toJsonString());
             }
+            if (request.cancelAfterTimeInterval != null) {
+                params.put("cancel_after_time_interval", request.cancelAfterTimeInterval._toJsonString());
+            }
             if (request.searchType != null) {
                 params.put("search_type", request.searchType.jsonValue());
             }
diff --git a/java-client/src/test/java/org/opensearch/client/opensearch/core/MsearchRequestTest.java b/java-client/src/test/java/org/opensearch/client/opensearch/core/MsearchRequestTest.java
index 5e0bbaa084..1113bed475 100644
--- a/java-client/src/test/java/org/opensearch/client/opensearch/core/MsearchRequestTest.java
+++ b/java-client/src/test/java/org/opensearch/client/opensearch/core/MsearchRequestTest.java
@@ -9,10 +9,11 @@
 package org.opensearch.client.opensearch.core;
 
 import java.util.Collections;
-import org.junit.Assert;
 import org.junit.Test;
+import org.opensearch.client.opensearch._types.Time;
+import org.opensearch.client.opensearch.model.ModelTestCase;
 
-public class MsearchRequestTest extends Assert {
+public class MsearchRequestTest extends ModelTestCase {
 
     @Test
     public void toBuilder() {
@@ -21,4 +22,17 @@ public void toBuilder() {
 
         assertEquals(copied.index(), origin.index());
     }
+
+    @Test
+    public void cancelAfterTimeInterval() {
+        Time cancelAfterTimeInterval = Time.of(ti -> ti.time("1000ms"));
+        MsearchRequest request = new MsearchRequest.Builder().index("index")
+            .searches(Collections.emptyList())
+            .cancelAfterTimeInterval(cancelAfterTimeInterval)
+            .build();
+
+        assertEquals("[]", toJson(request));
+        assertEquals(cancelAfterTimeInterval, request.cancelAfterTimeInterval());
+        assertEquals("1000ms", MsearchRequest._ENDPOINT.queryParameters(request).get("cancel_after_time_interval"));
+    }
 }
diff --git a/java-client/src/test/java/org/opensearch/client/opensearch/core/SearchRequestTest.java b/java-client/src/test/java/org/opensearch/client/opensearch/core/SearchRequestTest.java
index de5e1978b6..18b6e9de81 100644
--- a/java-client/src/test/java/org/opensearch/client/opensearch/core/SearchRequestTest.java
+++ b/java-client/src/test/java/org/opensearch/client/opensearch/core/SearchRequestTest.java
@@ -13,6 +13,7 @@
 import org.junit.Test;
 import org.opensearch.client.json.JsonData;
 import org.opensearch.client.opensearch._types.FieldValue;
+import org.opensearch.client.opensearch._types.Time;
 import org.opensearch.client.opensearch.core.search.SourceConfig;
 import org.opensearch.client.opensearch.core.search.SourceFilter;
 import org.opensearch.client.opensearch.model.ModelTestCase;
@@ -58,6 +59,16 @@ public void pipeline() {
         assertEquals("my_pipeline", SearchRequest._ENDPOINT.queryParameters(request).get("search_pipeline"));
     }
 
+    @Test
+    public void cancelAfterTimeInterval() {
+        Time cancelAfterTimeInterval = Time.of(ti -> ti.time("1000ms"));
+        SearchRequest request = new SearchRequest.Builder().cancelAfterTimeInterval(cancelAfterTimeInterval).build();
+
+        assertEquals("{}", toJson(request));
+        assertEquals(cancelAfterTimeInterval, request.cancelAfterTimeInterval());
+        assertEquals("1000ms", SearchRequest._ENDPOINT.queryParameters(request).get("cancel_after_time_interval"));
+    }
+
     @Test
     public void toBuilder() {
         SearchRequest origin = new SearchRequest.Builder().index("index").build();