diff --git a/tests/run_tests.py b/tests/run_tests.py
index bb3f75539..77535ca65 100755
--- a/tests/run_tests.py
+++ b/tests/run_tests.py
@@ -52,12 +52,90 @@
     # DXC not currently building on bot
     "draw_triangle_list_hlsl.amber"
    ]
-}
+ }
+
+SUPPRESSIONS_DAWN = [
+   # not implemented in Dawn backend
+  "compute_accumulated_ubo_definition.amber",
+  "compute_accumulated_ubo_definition.vkscript",
+  "compute_mat2x2.amber",
+  "compute_mat2x2.vkscript",
+  "compute_mat2x2float.vkscript",
+  "compute_mat2x3.vkscript",
+  "compute_mat2x3float.vkscript",
+  "compute_mat3x2.vkscript",
+  "compute_mat3x2float.vkscript",
+  "compute_mat3x3.vkscript",
+  "compute_mat3x3float.vkscript",
+  "compute_mat3x4.vkscript",
+  "compute_mat3x4float.vkscript",
+  "compute_mat4x3.vkscript",
+  "compute_mat4x3float.vkscript",
+  "compute_nothing.vkscript",
+  "compute_nothing_with_ssbo.vkscript",
+  "compute_probe_mat3.vkscript",
+  "compute_push_const_mat2x2.vkscript",
+  "compute_push_const_mat2x2float.vkscript",
+  "compute_push_const_mat2x3.vkscript",
+  "compute_push_const_mat2x3float.vkscript",
+  "compute_push_const_mat3x2.vkscript",
+  "compute_push_const_mat3x2float.vkscript",
+  "compute_push_const_mat3x3.vkscript",
+  "compute_push_const_mat3x3float.vkscript",
+  "compute_push_const_mat3x4.vkscript",
+  "compute_push_const_mat3x4float.vkscript",
+  "compute_push_const_mat4x3.vkscript",
+  "compute_push_const_mat4x3float.vkscript",
+  "compute_push_constant_and_ssbo.amber",
+  "compute_push_constant_and_ssbo.vkscript",
+  "compute_ssbo.vkscript",
+  "compute_ssbo_with_entrypoint_command.vkscript",
+  "compute_ssbo_with_tolerance.amber",
+  "compute_ssbo_with_tolerance.vkscript",
+  "compute_ssbo_without_probe.vkscript",
+  "compute_ubo_and_ssbo.vkscript",
+  "draw_array_after_draw_rect.vkscript",
+  "draw_rect_after_draw_array.vkscript",
+  "draw_rect_and_draw_array_mixed.vkscript",
+  "draw_rect_and_ortho.vkscript",
+  "draw_rect_multiple_color_attachment.amber",
+  "draw_rectangles.vkscript",
+  "draw_rectangles_once.vkscript",
+  "draw_rectangles_without_probe.vkscript",
+  "draw_triangle_list.amber",
+  "draw_triangle_list.vkscript",
+  "draw_triangle_list_in_r16g16b16a16_snorm_color_frame.vkscript",
+  "draw_triangle_list_in_r16g16b16a16_uint_color_frame.vkscript",
+  "draw_triangle_list_in_r32g32b32a32_sfloat_color_frame.vkscript",
+  "draw_triangle_list_in_r8g8b8a8_snorm_color_frame.vkscript",
+  "draw_triangle_list_in_r8g8b8a8_srgb_color_frame.vkscript",
+  "draw_triangle_list_using_geom_shader.vkscript",
+  "draw_triangle_list_using_tessellation.vkscript",
+  "draw_triangle_list_with_depth.vkscript",
+  "draw_triangle_list_with_index_buffer.vkscript",
+  "draw_triangle_list_with_index_buffer_and_vertex_offset.vkscript",
+  "draw_triangle_list_with_probe_point.vkscript",
+  "entry_point.amber",
+  "graphics_push_constants.amber",
+  "graphics_push_constants.vkscript",
+  "multiple_ssbo_update_with_graphics_pipeline.vkscript",
+  "multiple_ssbo_with_sparse_descriptor_set_in_compute_pipeline.vkscript",
+  "multiple_ubo_update_with_graphics_pipeline.vkscript",
+  "position_to_ssbo.amber",
+  "probe_no_compute_with_multiple_ssbo_commands.vkscript",
+  "probe_no_compute_with_ssbo.vkscript",
+  "repeat.amber",
+  "scratch_ssbo.vkscript",
+  "shader_specialization.amber",
+  "ssbo_subdata_size.vkscript",
+  "ssbo_with_graphics_pipeline.vkscript"
+]
 
 class TestCase:
-  def __init__(self, input_path, parse_only):
+  def __init__(self, input_path, parse_only, use_dawn):
     self.input_path = input_path
     self.parse_only = parse_only
+    self.use_dawn = use_dawn
 
     self.results = {}
 
@@ -68,12 +146,18 @@ def IsExpectedFail(self):
   def IsSuppressed(self):
     system = platform.system()
     if system in SUPPRESSIONS.keys():
-      return os.path.basename(self.input_path) in SUPPRESSIONS[system]
+      is_system_suppressed = os.path.basename(self.input_path) in SUPPRESSIONS[system]
+      is_dawn_suppressed = os.path.basename(self.input_path) in SUPPRESSIONS_DAWN
+      return is_system_suppressed | (self.use_dawn & is_dawn_suppressed)
+
     return False
 
   def IsParseOnly(self):
     return self.parse_only
 
+  def IsUseDawn(self):
+    return self.use_dawn
+
   def GetInputPath(self):
     return self.input_path
 
@@ -88,6 +172,8 @@ def RunTest(self, tc):
     cmd = [self.options.test_prog_path, '-q']
     if tc.IsParseOnly():
       cmd += ['-p']
+    if tc.IsUseDawn():
+      cmd += ['-e', 'dawn']
     cmd += [tc.GetInputPath()]
 
     try:
@@ -157,6 +243,9 @@ def Run(self):
     parser.add_option('--parse-only',
                       action="store_true", default=False,
                       help='only parse test cases; do not execute')
+    parser.add_option('--use-dawn',
+                      action="store_true", default=False,
+                      help='Use dawn as the backend; Default is Vulkan')
 
     self.options, self.args = parser.parse_args()
 
@@ -182,7 +271,7 @@ def Run(self):
           print "Cannot find test file '%s'" % filename
           return 1
 
-        self.test_cases.append(TestCase(input_path, self.options.parse_only))
+        self.test_cases.append(TestCase(input_path, self.options.parse_only, self.options.use_dawn))
 
     else:
       for file_dir, _, filename_list in os.walk(self.options.test_dir):
@@ -191,7 +280,7 @@ def Run(self):
             input_path = os.path.join(file_dir, input_filename)
             if os.path.isfile(input_path):
               self.test_cases.append(
-                  TestCase(input_path, self.options.parse_only))
+                  TestCase(input_path, self.options.parse_only, self.options.use_dawn))
 
     self.failures = []
     self.suppressed = []