diff --git a/CHANGELOG.rst b/CHANGELOG.rst
index 91e797d2..c57be01b 100644
--- a/CHANGELOG.rst
+++ b/CHANGELOG.rst
@@ -13,8 +13,12 @@ New Features
 * scrooge-core: `c.t.scrooge.ThriftUnion.fieldInfoForUnionClass` API for retrieving
   `ThriftStructFieldInfo` for a `ThriftUnion` member class without having to instantiate
   it. ``PHAB_ID=D871986``
+
 * scrooge-generator: Add @.generated annotation to Swift generated code ``PHAB_ID=D879262``
 
+* scrooge-generator: support thrift validations on nested fields that are struct, union, and
+  exception ``PHAB_ID=D911262``
+
 22.4.0
 ------
 
diff --git a/scrooge-generator-tests/src/test/scala/com/twitter/scrooge/backend/ValidationsSpec.scala b/scrooge-generator-tests/src/test/scala/com/twitter/scrooge/backend/ValidationsSpec.scala
index ec5f6c42..e0891af7 100644
--- a/scrooge-generator-tests/src/test/scala/com/twitter/scrooge/backend/ValidationsSpec.scala
+++ b/scrooge-generator-tests/src/test/scala/com/twitter/scrooge/backend/ValidationsSpec.scala
@@ -90,6 +90,15 @@ class ValidationsSpec extends JMockSpec with OneInstancePerTest {
     override def validateOnlyNonValidatedRequest(
       nonValidationRequest: NoValidationStruct
     ): Future[Boolean] = Future.True
+
+    override def validateNestedRequest(
+      nestedNonRequest: NestedNonValidationStruct
+    ): Future[Boolean] = Future.True
+
+    override def validateDeepNestedRequest(
+      deepNestedRequest: DeepNestedValidationstruct
+    ): Future[Boolean] =
+      Future.True
   }
 
   val clientReceiver = new InMemoryStatsReceiver
@@ -105,6 +114,22 @@ class ValidationsSpec extends JMockSpec with OneInstancePerTest {
       Name.bound(Address(thriftServer.boundAddress.asInstanceOf[InetSocketAddress])),
       "client")
 
+  "validate nestedStruct with annotation in the innerStruct" in { _ =>
+    val nestedNonValidationStruct = NestedNonValidationStruct("whatever", invalidStructRequest)
+    intercept[TApplicationException] {
+      await(methodPerEndpointClient.validateNestedRequest(nestedNonValidationStruct))
+    }
+  }
+
+  "validate deepNestedStruct with annotation in the deepInnerStruct" in { _ =>
+    val nestedNonValidationStruct = NestedNonValidationStruct("whatever", invalidStructRequest)
+    val deepNestedValidationStruct =
+      DeepNestedValidationstruct("whatever", nestedNonValidationStruct)
+    intercept[TApplicationException] {
+      await(methodPerEndpointClient.validateDeepNestedRequest(deepNestedValidationStruct))
+    }
+  }
+
   "validateInstanceValue" should {
     "validate Struct" in { _ =>
       val validationViolations = ValidationStruct.validateInstanceValue(invalidStructRequest)
@@ -252,6 +277,15 @@ class ValidationsSpec extends JMockSpec with OneInstancePerTest {
           validationRequest: ValidationStruct,
           validationRequestViolations: Set[ThriftValidationViolation]
         ): Future[Boolean] = Future.value(validationRequestViolations.nonEmpty)
+
+        override def validateNestedRequest(
+          nestedNonRequest: NestedNonValidationStruct
+        ): Future[Boolean] = Future.False
+
+        override def validateDeepNestedRequest(
+          deepNestedRequest: DeepNestedValidationstruct
+        ): Future[Boolean] =
+          Future.False
       }
 
       val thriftServer =
@@ -330,6 +364,15 @@ class ValidationsSpec extends JMockSpec with OneInstancePerTest {
           override def validateOnlyNonValidatedRequest(
             nonValidationRequest: NoValidationStruct
           ): Future[Boolean] = Future.False
+
+          override def validateNestedRequest(
+            nestedNonRequest: NestedNonValidationStruct
+          ): Future[Boolean] = Future.False
+
+          override def validateDeepNestedRequest(
+            deepNestedRequest: DeepNestedValidationstruct
+          ): Future[Boolean] =
+            Future.False
         }
 
         val thriftServer =
diff --git a/scrooge-generator-tests/src/test/scala/com/twitter/scrooge/java_generator/ValidationsJavaGeneratorSpec.scala b/scrooge-generator-tests/src/test/scala/com/twitter/scrooge/java_generator/ValidationsJavaGeneratorSpec.scala
index 51424acf..306779e5 100644
--- a/scrooge-generator-tests/src/test/scala/com/twitter/scrooge/java_generator/ValidationsJavaGeneratorSpec.scala
+++ b/scrooge-generator-tests/src/test/scala/com/twitter/scrooge/java_generator/ValidationsJavaGeneratorSpec.scala
@@ -46,6 +46,15 @@ class ValidationsJavaGeneratorSpec extends Spec {
     override def validateOnlyValidatedRequest(
       validationRequest: ValidationStruct
     ): Future[lang.Boolean] = Future.value(true)
+
+    override def validateNestedRequest(
+      nestedNonRequest: NestedNonValidationStruct
+    ): Future[lang.Boolean] = Future.value(true)
+
+    override def validateDeepNestedRequest(
+      deepNestedRequest: DeepNestedValidationstruct
+    ): Future[lang.Boolean] =
+      Future.value(true)
   }
 
   "Java validateInstanceValue" should {
@@ -203,6 +212,14 @@ class ValidationsJavaGeneratorSpec extends Spec {
           // should return false if `structRequest` is invalid
           Future.value(structRequestViolations.isEmpty)
         }
+
+        override def validateNestedRequest(
+          nestedNonRequest: NestedNonValidationStruct
+        ): Future[lang.Boolean] = Future.value(true)
+
+        override def validateDeepNestedRequest(
+          deepNestedRequest: DeepNestedValidationstruct
+        ): Future[lang.Boolean] = Future.value(true)
       }
       val validationStruct = new ValidationStruct(
         "email",
diff --git a/scrooge-generator-tests/src/test/thrift/standalone/validations.thrift b/scrooge-generator-tests/src/test/thrift/standalone/validations.thrift
index 0f718df3..1a175ce1 100644
--- a/scrooge-generator-tests/src/test/thrift/standalone/validations.thrift
+++ b/scrooge-generator-tests/src/test/thrift/standalone/validations.thrift
@@ -30,6 +30,16 @@ struct NonValidationStruct {
   1: string stringField (structFieldKey = "")
 }
 
+struct NestedNonValidationStruct {
+ 1: string stringField
+ 2: ValidationStruct nestedStruct
+}
+
+struct DeepNestedValidationstruct {
+ 1: string stringField
+ 2: NestedNonValidationStruct deepNestedStruct
+}
+
 struct NestedValidationStruct {
   1: string stringField (validation.email = "")
   2: ValidationStruct nestedStructField
@@ -69,4 +79,10 @@ service ValidationService {
   bool validateOnlyValidatedRequest (
     1: ValidationStruct validationRequest
   )
+  bool validateNestedRequest (
+   1: NestedNonValidationStruct nestedNonRequest
+  )
+  bool validateDeepNestedRequest (
+   1: DeepNestedValidationstruct deepNestedRequest
+  )
 }
diff --git a/scrooge-generator/src/main/scala/com/twitter/scrooge/backend/ServiceTemplate.scala b/scrooge-generator/src/main/scala/com/twitter/scrooge/backend/ServiceTemplate.scala
index 362b8bd0..19853a5b 100644
--- a/scrooge-generator/src/main/scala/com/twitter/scrooge/backend/ServiceTemplate.scala
+++ b/scrooge-generator/src/main/scala/com/twitter/scrooge/backend/ServiceTemplate.scala
@@ -444,17 +444,21 @@ trait ServiceTemplate { self: TemplateGenerator =>
 
   // return true if the `Field` is of struct type (struct, union, or exception), and any fields
   // of the `Field` has validation annotation (annotation key starts with "validation.")
-  private[this] def hasValidationAnnotation(field: Field): Boolean =
+  private[this] def hasValidationAnnotation(field: Field): Boolean = {
     field.fieldType match {
       case structType: StructType =>
         val structLike = structType.struct
         structLike match {
           case _: Struct | _: Union | _: Exception_ =>
-            structLike.fields.exists(_.hasValidationAnnotation)
+            structLike.fields.exists { field =>
+              // recursively look for validation annotations for nestedFields
+              field.hasValidationAnnotation || hasValidationAnnotation(field)
+            }
           case _ => false
         }
       case _ => false
     }
+  }
 
   private[this] class NameDeduplicator() {
     private[this] val seenIDs = new mutable.HashSet[String]