diff --git a/doc/source/formats.rst b/doc/source/formats.rst
index c763a77e..d2cabe9b 100644
--- a/doc/source/formats.rst
+++ b/doc/source/formats.rst
@@ -41,6 +41,11 @@ You can set your image's disk format to one of the following:
   This is the VHD disk format, a common disk format used by virtual machine
   monitors from VMWare, Xen, Microsoft, VirtualBox, and others
 
+* **vhdx**
+
+  This is the VHDX disk format, an enhanced version of the vhd format which
+  supports larger disk sizes among other features.
+
 * **vmdk**
 
   Another common disk format supported by many common virtual machine monitors
diff --git a/doc/source/glanceapi.rst b/doc/source/glanceapi.rst
index 25703f05..e03cc564 100644
--- a/doc/source/glanceapi.rst
+++ b/doc/source/glanceapi.rst
@@ -510,8 +510,8 @@ The list of metadata headers that Glance accepts are listed below.
 * ``x-image-meta-disk_format``
 
   This header is required, unless reserving an image. Valid values are one of
-  ``aki``, ``ari``, ``ami``, ``raw``, ``iso``, ``vhd``, ``vdi``, ``qcow2``, or
-  ``vmdk``.
+  ``aki``, ``ari``, ``ami``, ``raw``, ``iso``, ``vhd``, ``vhdx``, ``vdi``,
+  ``qcow2``, or ``vmdk``.
 
   For more information, see :doc:`About Disk and Container Formats <formats>`.
 
diff --git a/etc/glance-api.conf b/etc/glance-api.conf
index 9362b122..a97ca648 100644
--- a/etc/glance-api.conf
+++ b/etc/glance-api.conf
@@ -1105,7 +1105,7 @@
 
 # Supported values for the 'disk_format' image attribute (list value)
 # Deprecated group/name - [DEFAULT]/disk_formats
-#disk_formats = ami,ari,aki,vhd,vmdk,raw,qcow2,vdi,iso
+#disk_formats = ami,ari,aki,vhd,vhdx,vmdk,raw,qcow2,vdi,iso
 
 
 [keystone_authtoken]
diff --git a/glance/common/config.py b/glance/common/config.py
index e498b6a8..5d5a95b1 100644
--- a/glance/common/config.py
+++ b/glance/common/config.py
@@ -48,8 +48,8 @@ image_format_opts = [
                 deprecated_opts=[cfg.DeprecatedOpt('container_formats',
                                                    group='DEFAULT')]),
     cfg.ListOpt('disk_formats',
-                default=['ami', 'ari', 'aki', 'vhd', 'vmdk', 'raw', 'qcow2',
-                         'vdi', 'iso'],
+                default=['ami', 'ari', 'aki', 'vhd', 'vhdx', 'vmdk', 'raw',
+                         'qcow2', 'vdi', 'iso'],
                 help=_("Supported values for the 'disk_format' "
                        "image attribute"),
                 deprecated_opts=[cfg.DeprecatedOpt('disk_formats',
diff --git a/glance/contrib/plugins/image_artifact/v1/image.py b/glance/contrib/plugins/image_artifact/v1/image.py
index a084d76c..d842416f 100644
--- a/glance/contrib/plugins/image_artifact/v1/image.py
+++ b/glance/contrib/plugins/image_artifact/v1/image.py
@@ -21,8 +21,9 @@ class ImageAsAnArtifact(definitions.ArtifactType):
 
     file = definitions.BinaryObject(required=True)
     disk_format = definitions.String(allowed_values=['ami', 'ari', 'aki',
-                                                     'vhd', 'vmdk', 'raw',
-                                                     'qcow2', 'vdi', 'iso'],
+                                                     'vhd', 'vhdx', 'vmdk',
+                                                     'raw', 'qcow2', 'vdi',
+                                                     'iso'],
                                      required=True,
                                      mutable=False)
     container_format = definitions.String(allowed_values=['ami', 'ari',
diff --git a/glance/tests/unit/v2/test_images_resource.py b/glance/tests/unit/v2/test_images_resource.py
index 3cfc4ddf..776f3ecb 100644
--- a/glance/tests/unit/v2/test_images_resource.py
+++ b/glance/tests/unit/v2/test_images_resource.py
@@ -3726,8 +3726,8 @@ class TestImagesSerializerDirectUrl(test_utils.BaseTestCase):
 class TestImageSchemaFormatConfiguration(test_utils.BaseTestCase):
     def test_default_disk_formats(self):
         schema = glance.api.v2.images.get_schema()
-        expected = [None, 'ami', 'ari', 'aki', 'vhd', 'vmdk', 'raw', 'qcow2',
-                    'vdi', 'iso']
+        expected = [None, 'ami', 'ari', 'aki', 'vhd', 'vhdx', 'vmdk',
+                    'raw', 'qcow2', 'vdi', 'iso']
         actual = schema.properties['disk_format']['enum']
         self.assertEqual(expected, actual)
 
diff --git a/rally-jobs/plugins/plugin_sample.py b/rally-jobs/plugins/plugin_sample.py
index 087593db..6274d85f 100644
--- a/rally-jobs/plugins/plugin_sample.py
+++ b/rally-jobs/plugins/plugin_sample.py
@@ -42,7 +42,7 @@ class GlancePlugin(scenario.OpenStackScenario):
         Acceptable formats: ami, ari, aki, bare, ovf, ova and docker.
         :param image_location: image file location used to upload
         :param disk_format: Disk format of image. Acceptable formats:
-        ami, ari, aki, vhd, vmdk, raw, qcow2, vdi, and iso.
+        ami, ari, aki, vhd, vhdx, vmdk, raw, qcow2, vdi, and iso.
         :param **kwargs:  optional parameters to create image
 
         returns: object of image
diff --git a/releasenotes/notes/add-vhdx-format-2be99354ad320cca.yaml b/releasenotes/notes/add-vhdx-format-2be99354ad320cca.yaml
new file mode 100644
index 00000000..83cf4bc5
--- /dev/null
+++ b/releasenotes/notes/add-vhdx-format-2be99354ad320cca.yaml
@@ -0,0 +1,11 @@
+---
+prelude: >
+  - Add VHDX to list of supported disk format.
+features:
+  - The identifier ``vhdx`` has been added to the list of
+    supported disk formats in Glance. The respective
+    configuration option has been updated and the default
+    list shows ``vhdx`` as a supported format.
+upgrade:
+  - The ``disk_format`` config option enables ``vhdx`` as
+    supported by default.