diff --git a/Tools/ServiceGenerator/SGGenerator.m b/Tools/ServiceGenerator/SGGenerator.m
index d174ce0fa..bf11d6a3f 100644
--- a/Tools/ServiceGenerator/SGGenerator.m
+++ b/Tools/ServiceGenerator/SGGenerator.m
@@ -52,6 +52,7 @@
 static NSString *kReturnsSchemaParameterKey       = @"returnsSchema";
 static NSString *kAllMethodObjectParametersKey    = @"allMethodObjectParameters";
 static NSString *kAllMethodObjectParameterRefsKey = @"allMethodObjectParameterRefs";
+static NSString *kHasDeprecatedSchemaKey          = @"hasDeprecatedSchemaKey";
 static NSString *kCleanedRootURLStringKey         = @"cleanedRootURLString";
 static NSString *kResumableUploadPathKey          = @"resumableUploadPath";
 static NSString *kSimpleUploadPathKey             = @"simpleUploadPath";
@@ -96,6 +97,7 @@ @interface GTLRDiscovery_RestDescription (SGGeneratorAdditions)
 @property(readonly) NSDictionary *sg_objectEnumsMap;
 @property(readonly) NSArray *sg_allSchemas;
 @property(readonly) NSArray *sg_topLevelObjectSchemas;
+@property(readonly) BOOL sg_hasDeprecatedSchema;
 @property(readonly) NSArray *sg_allMethodObjectParameterReferences;
 @property(readonly) NSString *sg_resumableUploadPath;
 @property(readonly) NSString *sg_simpleUploadPath;
@@ -1287,6 +1289,7 @@ - (NSString *)objectsHeader {
   }
 
   SGClangDirectives *clangDirectives = [SGClangDirectives disabledDocumentation];
+  clangDirectives.disableDeprecatedDeclarations = self.api.sg_hasDeprecatedSchema;
   [parts addObject:clangDirectives.start];
 
   [parts addObject:@"NS_ASSUME_NONNULL_BEGIN\n"];
@@ -1339,6 +1342,14 @@ - (NSString *)objectsSource {
     [parts addObjectsFromArray:blocks];
   }
 
+  SGClangDirectives *clangDirectives = [[SGClangDirectives alloc] init];
+  BOOL hasDeprecatedSchema = self.api.sg_hasDeprecatedSchema;
+  clangDirectives.disableDeprecatedImplementations = hasDeprecatedSchema;
+  clangDirectives.disableDeprecatedDeclarations = hasDeprecatedSchema;
+  if (clangDirectives.hasDirectives) {
+    [parts addObject:clangDirectives.start];
+  }
+
   NSMutableArray *classParts = [NSMutableArray array];
   for (GTLRDiscovery_JsonSchema *schema in self.api.sg_topLevelObjectSchemas) {
     NSString *objectClassStr = [self generateObjectClassForSchema:schema
@@ -1354,6 +1365,10 @@ - (NSString *)objectsSource {
   // Two blank lines between classes.
   [parts addObject:[classParts componentsJoinedByString:@"\n\n"]];
 
+  if (clangDirectives.hasDirectives) {
+    [parts addObject:clangDirectives.end];
+  }
+
   return [parts componentsJoinedByString:@"\n"];
 }
 
@@ -2403,8 +2418,9 @@ - (NSString *)generateObjectClassForSchema:(GTLRDiscovery_JsonSchema *)schema
     } else if (isTopLevelArrayResult) {
       baseClass = kResultArrayClass;
     }
-    atBlock = [NSString stringWithFormat:@"@interface %@ : %@\n",
-               schemaClassName, baseClass];
+    NSString *maybeDeprecated = schema.deprecated.boolValue ? kDeprecatedWithNewline : @"";
+    atBlock = [NSString stringWithFormat:@"%@@interface %@ : %@\n",
+               maybeDeprecated, schemaClassName, baseClass];
   } else {
     atBlock = [NSString stringWithFormat:@"@implementation %@\n",
                schemaClassName];
@@ -3313,6 +3329,37 @@ - (NSArray *)sg_topLevelObjectSchemas {
   return result;
 }
 
+- (BOOL)sg_hasDeprecatedSchema {
+  // This could be expanded to deal with if there are referenced as types
+  // on other schema vs. queries to only add the guards when needed, but
+  // for now just generally insert them when any schema was deprecated.
+  NSNumber *result = [self sg_propertyForKey:kHasDeprecatedSchemaKey];
+  if (result == nil) {
+    BOOL hasDeprecated = NO;
+
+    for (GTLRDiscovery_JsonSchema *schema in self.sg_topLevelObjectSchemas) {
+      if (schema.deprecated.boolValue) {
+        hasDeprecated = YES;
+        break;
+      }
+
+      for (GTLRDiscovery_JsonSchema *subSchema in schema.sg_childObjectSchemas) {
+        if (subSchema.deprecated.boolValue) {
+          hasDeprecated = YES;
+          break;
+        }
+      }
+      if (hasDeprecated) {
+        break;
+      }
+    }
+
+    result = [NSNumber numberWithBool:hasDeprecated];
+    [self sg_setProperty:result forKey:kHasDeprecatedSchemaKey];
+  }
+  return [result boolValue];
+}
+
 // These are resolved schema references in the method parameters (refs or
 // inline).
 - (NSArray *)sg_allMethodObjectParameterReferences {
diff --git a/Tools/ServiceGenerator/SGUtils.h b/Tools/ServiceGenerator/SGUtils.h
index 50424c101..7159d6b89 100644
--- a/Tools/ServiceGenerator/SGUtils.h
+++ b/Tools/ServiceGenerator/SGUtils.h
@@ -73,6 +73,8 @@
 
 // -Wdeprecated-implementations
 @property BOOL disableDeprecatedImplementations;
+// -Wdeprecated-declarations
+@property BOOL disableDeprecatedDeclarations;
 // -Wdocumentation
 @property BOOL disableDocumentation;
 
diff --git a/Tools/ServiceGenerator/SGUtils.m b/Tools/ServiceGenerator/SGUtils.m
index 3aa64fc0e..9b3bc6ef6 100644
--- a/Tools/ServiceGenerator/SGUtils.m
+++ b/Tools/ServiceGenerator/SGUtils.m
@@ -681,6 +681,7 @@ typedef NS_OPTIONS(NSInteger, SGCDFlags) {
   SGCDFlagsNone                       = 0,
   SGCDFlagsDocumentation              = 1 << 0,
   SGCDFlagsDeprecatedImplementations  = 1 << 1,
+  SGCDFlagsDeprecatedDeclarations     = 1 << 2,
 };
 
 @implementation SGClangDirectives {
@@ -700,6 +701,14 @@ - (void)setDisableDeprecatedImplementations:(BOOL)value {
   SET_FLAG(SGCDFlagsDeprecatedImplementations, value);
 }
 
+- (BOOL)disableDeprecatedDeclarations {
+  return IS_FLAG_SET(SGCDFlagsDeprecatedDeclarations);
+}
+
+- (void)setDisableDeprecatedDeclarations:(BOOL)value {
+  SET_FLAG(SGCDFlagsDeprecatedDeclarations, value);
+}
+
 - (BOOL)disableDocumentation {
   return IS_FLAG_SET(SGCDFlagsDocumentation);
 }
@@ -740,6 +749,11 @@ - (NSString *)start {
     [result appendString:@"#pragma clang diagnostic push\n"];
   }
 
+  if (self.disableDeprecatedDeclarations) {
+    [result appendString:
+     @"#pragma clang diagnostic ignored \"-Wdeprecated-declarations\"\n"];
+  }
+
   if (self.disableDeprecatedImplementations) {
     [result appendString:
      @"#pragma clang diagnostic ignored \"-Wdeprecated-implementations\"\n"];