diff --git a/api-ref/source/v2/availability-zones-v2.inc b/api-ref/source/v2/availability-zones-v2.inc
new file mode 100644
index 00000000000..827bf126c70
--- /dev/null
+++ b/api-ref/source/v2/availability-zones-v2.inc
@@ -0,0 +1,45 @@
+.. -*- rst -*-
+
+Availability zones (os-availability-zone)
+=========================================
+
+List availability zone information.
+
+
+Get Availability Zone Information
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+.. rest_method:: GET /v2/{project_id}/os-availability-zone
+
+List availability zone information.
+
+Response codes
+--------------
+
+.. rest_status_code:: success ../status.yaml
+
+   - 200
+
+Request
+-------
+
+.. rest_parameters:: parameters.yaml
+
+   - project_id: project_id_path
+
+Response Parameter
+------------------
+
+.. rest_parameters:: parameters.yaml
+
+  - project_id: project_id
+  - availabilityZoneInfo: availability_zone_info
+  - zoneName: availability_zone_3
+  - zoneState: availability_zone_state
+  - available: available
+
+Response Example
+----------------
+
+.. literalinclude:: ./samples/availability-zone-list-response.json
+   :language: javascript
diff --git a/api-ref/source/v2/index.rst b/api-ref/source/v2/index.rst
index ff8ab1d26a2..b524e6fdb44 100644
--- a/api-ref/source/v2/index.rst
+++ b/api-ref/source/v2/index.rst
@@ -22,6 +22,7 @@ Block Storage API V2 (REMOVED)
 .. rest_expand_all::
 
 .. include:: api-versions.inc
+.. include:: availability-zones-v2.inc
 .. include:: ext-backups.inc
 .. include:: ext-backups-actions-v2.inc
 .. include:: capabilities-v2.inc
diff --git a/api-ref/source/v2/parameters.yaml b/api-ref/source/v2/parameters.yaml
index be357736f51..bddd6889150 100644
--- a/api-ref/source/v2/parameters.yaml
+++ b/api-ref/source/v2/parameters.yaml
@@ -287,6 +287,24 @@ availability_zone_3:
   in: body
   required: true
   type: string
+availability_zone_info:
+  description: |
+    The list of availability zone information.
+  in: body
+  required: true
+  type: array
+availability_zone_state:
+  description: |
+    The current state of the availability zone.
+  in: body
+  required: true
+  type: object
+available:
+  description: |
+    Whether the availability zone is available for use.
+  in: body
+  required: true
+  type: boolean
 backup:
   description: |
     A ``backup`` object.
diff --git a/api-ref/source/v2/samples/availability-zone-list-response.json b/api-ref/source/v2/samples/availability-zone-list-response.json
new file mode 100644
index 00000000000..273fd0f1f42
--- /dev/null
+++ b/api-ref/source/v2/samples/availability-zone-list-response.json
@@ -0,0 +1,8 @@
+{
+   "availabilityZoneInfo": [{
+      "zoneState": {
+         "available": true
+      },
+      "zoneName": "nova"
+   }]
+}
\ No newline at end of file
diff --git a/api-ref/source/v3/availability-zones-v3.inc b/api-ref/source/v3/availability-zones-v3.inc
new file mode 100644
index 00000000000..1740d6fc9cc
--- /dev/null
+++ b/api-ref/source/v3/availability-zones-v3.inc
@@ -0,0 +1,45 @@
+.. -*- rst -*-
+
+Availability zones (os-availability-zone)
+=========================================
+
+List availability zone information.
+
+
+List Availability Zone Information
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+.. rest_method:: GET /v3/{project_id}/os-availability-zone
+
+List availability zone information.
+
+Response codes
+--------------
+
+.. rest_status_code:: success ../status.yaml
+
+   - 200
+
+Request
+-------
+
+.. rest_parameters:: parameters.yaml
+
+   - project_id: project_id_path
+
+Response Parameter
+------------------
+
+.. rest_parameters:: parameters.yaml
+
+  - project_id: project_id
+  - availabilityZoneInfo: availability_zone_info
+  - zoneName: availability_zone_required
+  - zoneState: availability_zone_state
+  - available: available
+
+Response Example
+----------------
+
+.. literalinclude:: ./samples/availability-zone-list-response.json
+   :language: javascript
diff --git a/api-ref/source/v3/index.rst b/api-ref/source/v3/index.rst
index 780afad2042..3c65a66d923 100644
--- a/api-ref/source/v3/index.rst
+++ b/api-ref/source/v3/index.rst
@@ -52,6 +52,7 @@ Block Storage API V3 (CURRENT)
 
 .. Now the other random things in alphabetical order.
 .. include:: attachments.inc
+.. include:: availability-zones-v3.inc
 .. include:: os-vol-pool-v3.inc
 .. include:: ext-backups.inc
 .. include:: ext-backups-actions-v3.inc
diff --git a/api-ref/source/v3/parameters.yaml b/api-ref/source/v3/parameters.yaml
index 6badddc24c6..f926241832f 100644
--- a/api-ref/source/v3/parameters.yaml
+++ b/api-ref/source/v3/parameters.yaml
@@ -714,12 +714,30 @@ availability_zone_backup:
   required: false
   type: string
   min_version: 3.51
+availability_zone_info:
+  description: |
+    The list of availability zone information.
+  in: body
+  required: true
+  type: array
 availability_zone_required:
   description: |
     The availability zone name.
   in: body
   required: true
   type: string
+availability_zone_state:
+  description: |
+    The current state of the availability zone.
+  in: body
+  required: true
+  type: object
+available:
+  description: |
+    Whether the availability zone is available for use.
+  in: body
+  required: true
+  type: boolean
 backend_id:
   description: |
     ID of backend to failover to. Default is ``None``.
diff --git a/api-ref/source/v3/samples/availability-zone-list-response.json b/api-ref/source/v3/samples/availability-zone-list-response.json
new file mode 100644
index 00000000000..87fadc43182
--- /dev/null
+++ b/api-ref/source/v3/samples/availability-zone-list-response.json
@@ -0,0 +1,8 @@
+{
+    "availabilityZoneInfo": [{
+        "zoneState": {
+            "available": true
+        },
+    "zoneName": "nova"
+    }]
+}
\ No newline at end of file