diff --git a/deploy-guide/source/deploymenthost.rst b/deploy-guide/source/deploymenthost.rst
index a4605df9a7..de8f92d2c3 100644
--- a/deploy-guide/source/deploymenthost.rst
+++ b/deploy-guide/source/deploymenthost.rst
@@ -28,7 +28,6 @@ hosts:
 
 * `Ubuntu server 18.04 (Bionic Beaver) LTS 64-bit <http://releases.ubuntu.com/18.04/>`_
 * `Ubuntu server 20.04 (Focal Fossa) LTS 64-bit <http://releases.ubuntu.com/20.04/>`_
-* `Debian 10 (Buster) LTS 64-bit <https://www.debian.org/distrib/>`_
 * `Debian 11 (Bullseye) LTS 64-bit <https://www.debian.org/distrib/>`_
 * `Centos 8 64-bit <http://isoredirect.centos.org/centos/8/isos/x86_64/>`_
 * `Centos 8 Stream 64-bit <http://isoredirect.centos.org/centos/8-stream/isos/x86_64/>`_
diff --git a/deploy-guide/source/overview-requirements.rst b/deploy-guide/source/overview-requirements.rst
index 8e15483548..789ea7cff1 100644
--- a/deploy-guide/source/overview-requirements.rst
+++ b/deploy-guide/source/overview-requirements.rst
@@ -6,8 +6,6 @@ following minimum requirements:
 
 * Debian
 
-  * Debian 10 (buster)
-
   * Debian 11 (bullseye)
 
   * Linux kernel version ``4.9.0-0-amd64`` or later is required.
diff --git a/doc/source/user/aio/quickstart.rst b/doc/source/user/aio/quickstart.rst
index d6d11d80a4..08a7642967 100644
--- a/doc/source/user/aio/quickstart.rst
+++ b/doc/source/user/aio/quickstart.rst
@@ -121,7 +121,7 @@ version.
 
 .. note::
    The |current_release_formal_name| release is only compatible with
-   Debian 10 (buster), Debian 11 (bullseye), Ubuntu 18.04 (Bionic Beaver),
+   Debian 11 (bullseye), Ubuntu 18.04 (Bionic Beaver),
    Ubuntu 20.04 (Focal Fossa), CentOS 8 and CentOS 8 Stream.
 
 .. warning::
diff --git a/playbooks/openstack-hosts-setup.yml b/playbooks/openstack-hosts-setup.yml
index 6568b109cd..584da9a5ea 100644
--- a/playbooks/openstack-hosts-setup.yml
+++ b/playbooks/openstack-hosts-setup.yml
@@ -53,13 +53,12 @@
     - name: Check for a supported Operating System
       assert:
         that:
-          - (ansible_facts['distribution'] == 'Debian' and ansible_facts['distribution_release'] == 'buster') or
-            (ansible_facts['distribution'] == 'Debian' and ansible_facts['distribution_release'] == 'bullseye') or
+          - (ansible_facts['distribution'] == 'Debian' and ansible_facts['distribution_release'] == 'bullseye') or
             (ansible_facts['distribution'] == 'Ubuntu' and ansible_facts['distribution_release'] == 'bionic') or
             (ansible_facts['distribution'] == 'Ubuntu' and ansible_facts['distribution_release'] == 'focal') or
             (ansible_facts['os_family'] == 'RedHat' and ansible_facts['distribution_major_version'] == '8')
         msg: >
-          The only supported platforms for this release are Debian 10 (Buster), Debian 11 (Bullseye),
+          The only supported platforms for this release are Debian 11 (Bullseye),
           Ubuntu 18.04 LTS (Bionic), Ubuntu 20.04 LTS (Focal), CentOS 8 and CentOS 8 Stream.
     - name: Check for a supported path
       assert:
diff --git a/releasenotes/notes/drop-buster-0d63a54b1e5ee288.yaml b/releasenotes/notes/drop-buster-0d63a54b1e5ee288.yaml
new file mode 100644
index 0000000000..b8ebe6538d
--- /dev/null
+++ b/releasenotes/notes/drop-buster-0d63a54b1e5ee288.yaml
@@ -0,0 +1,6 @@
+---
+upgrade:
+  - |
+    The Yoga release of OpenStack-Ansible removes support for Debian Buster.
+    Deployments should be upgraded from Buster to Bullseye before or during the
+    Xena release before upgrading to Yoga.
diff --git a/tests/roles/bootstrap-host/tasks/check-requirements.yml b/tests/roles/bootstrap-host/tasks/check-requirements.yml
index 855195bd9f..35f31aad0b 100644
--- a/tests/roles/bootstrap-host/tasks/check-requirements.yml
+++ b/tests/roles/bootstrap-host/tasks/check-requirements.yml
@@ -16,13 +16,12 @@
 - name: Check for a supported Operating System
   assert:
     that:
-        (ansible_facts['distribution'] == 'Debian' and ansible_facts['distribution_release'] == 'buster') or
         (ansible_facts['distribution'] == 'Debian' and ansible_facts['distribution_release'] == 'bullseye') or
         (ansible_facts['distribution'] == 'Ubuntu' and ansible_facts['distribution_release'] == 'bionic') or
         (ansible_facts['distribution'] == 'Ubuntu' and ansible_facts['distribution_release'] == 'focal') or
         (ansible_facts['os_family'] == 'RedHat' and ansible_facts['distribution_major_version'] == '8')
     msg: >-
-      The only supported platforms for this release are Debian Buster, Debian Bullseye,
+      The only supported platforms for this release are Debian Bullseye,
       Ubuntu 18.04 LTS (Bionic), Ubuntu 20.04 (Focal),
       CentOS 8, CentOS 8 Stream
   when: (check_operating_system | default(True))| bool
diff --git a/zuul.d/jobs.yaml b/zuul.d/jobs.yaml
index 9b3583b8d0..0e72f9a214 100644
--- a/zuul.d/jobs.yaml
+++ b/zuul.d/jobs.yaml
@@ -554,52 +554,6 @@
     nodeset: centos-8
     timeout: 10800
 
-# debian buster
-- job:
-    name: openstack-ansible-deploy-aio_telemetry_metal-debian-buster
-    parent: openstack-ansible-deploy-aio
-    nodeset: debian-buster
-
-- job:
-    name: openstack-ansible-deploy-aio_lxc-debian-buster
-    parent: openstack-ansible-deploy-aio
-    nodeset: debian-buster
-
-- job:
-    name: openstack-ansible-deploy-infra_lxc-debian-buster
-    parent: openstack-ansible-deploy-aio
-    nodeset: debian-buster
-
-- job:
-    name: openstack-ansible-deploy-hosts_lxc-debian-buster
-    parent: openstack-ansible-deploy-aio
-    nodeset: debian-buster
-
-- job:
-    name: openstack-ansible-deploy-hosts_distro_lxc-debian-buster
-    parent: openstack-ansible-deploy-aio
-    nodeset: debian-buster
-
-- job:
-    name: openstack-ansible-deploy-hosts_metal-debian-buster
-    parent: openstack-ansible-deploy-aio
-    nodeset: debian-buster
-
-- job:
-    name: openstack-ansible-deploy-aio_distro_lxc-debian-buster
-    parent: openstack-ansible-deploy-aio-distro
-    nodeset: debian-buster
-
-- job:
-    name: openstack-ansible-deploy-aio_metal-debian-buster
-    parent: openstack-ansible-deploy-aio
-    nodeset: debian-buster
-
-- job:
-    name: openstack-ansible-deploy-aio_distro_metal-debian-buster
-    parent: openstack-ansible-deploy-aio-distro
-    nodeset: debian-buster
-
 # debian bullseye
 
 - job:
diff --git a/zuul.d/project-templates.yaml b/zuul.d/project-templates.yaml
index 8cb4d370a6..f8785825d7 100644
--- a/zuul.d/project-templates.yaml
+++ b/zuul.d/project-templates.yaml
@@ -37,14 +37,12 @@
       jobs:
         - openstack-ansible-deploy-aio_lxc-centos-8
         - openstack-ansible-deploy-aio_lxc-centos-8-stream
-        - openstack-ansible-deploy-aio_lxc-debian-buster
         - openstack-ansible-deploy-aio_lxc-debian-bullseye
         - openstack-ansible-deploy-aio_lxc-ubuntu-focal
     gate:
       jobs:
         - openstack-ansible-deploy-aio_lxc-centos-8
         - openstack-ansible-deploy-aio_lxc-centos-8-stream
-        - openstack-ansible-deploy-aio_lxc-debian-buster
         - openstack-ansible-deploy-aio_lxc-debian-bullseye
         - openstack-ansible-deploy-aio_lxc-ubuntu-focal
     periodic:
@@ -80,14 +78,12 @@
       jobs:
         - openstack-ansible-deploy-infra_lxc-centos-8
         - openstack-ansible-deploy-infra_lxc-centos-8-stream
-        - openstack-ansible-deploy-infra_lxc-debian-buster
         - openstack-ansible-deploy-infra_lxc-debian-bullseye
         - openstack-ansible-deploy-infra_lxc-ubuntu-focal
     gate:
       jobs:
         - openstack-ansible-deploy-infra_lxc-centos-8
         - openstack-ansible-deploy-infra_lxc-centos-8-stream
-        - openstack-ansible-deploy-infra_lxc-debian-buster
         - openstack-ansible-deploy-infra_lxc-debian-bullseye
         - openstack-ansible-deploy-infra_lxc-ubuntu-focal
     periodic:
@@ -100,14 +96,12 @@
       jobs:
         - openstack-ansible-deploy-hosts_lxc-centos-8
         - openstack-ansible-deploy-hosts_lxc-centos-8-stream
-        - openstack-ansible-deploy-hosts_lxc-debian-buster
         - openstack-ansible-deploy-hosts_lxc-debian-bullseye
         - openstack-ansible-deploy-hosts_lxc-ubuntu-focal
     gate:
       jobs:
         - openstack-ansible-deploy-hosts_lxc-centos-8
         - openstack-ansible-deploy-hosts_lxc-centos-8-stream
-        - openstack-ansible-deploy-hosts_lxc-debian-buster
         - openstack-ansible-deploy-hosts_lxc-debian-bullseye
         - openstack-ansible-deploy-hosts_lxc-ubuntu-focal
     periodic:
@@ -120,14 +114,12 @@
       jobs:
         - openstack-ansible-deploy-hosts_metal-centos-8
         - openstack-ansible-deploy-hosts_metal-centos-8-stream
-        - openstack-ansible-deploy-hosts_metal-debian-buster
         - openstack-ansible-deploy-hosts_metal-debian-bullseye
         - openstack-ansible-deploy-hosts_metal-ubuntu-focal
     gate:
       jobs:
         - openstack-ansible-deploy-hosts_metal-centos-8
         - openstack-ansible-deploy-hosts_metal-centos-8-stream
-        - openstack-ansible-deploy-hosts_metal-debian-buster
         - openstack-ansible-deploy-hosts_metal-debian-bullseye
         - openstack-ansible-deploy-hosts_metal-ubuntu-focal
     periodic:
@@ -139,13 +131,11 @@
     check:
       jobs:
         - openstack-ansible-deploy-hosts_distro_lxc-centos-8-stream
-        - openstack-ansible-deploy-hosts_distro_lxc-debian-buster
         - openstack-ansible-deploy-hosts_distro_lxc-debian-bullseye
         - openstack-ansible-deploy-hosts_distro_lxc-ubuntu-focal
     gate:
       jobs:
         - openstack-ansible-deploy-hosts_distro_lxc-centos-8-stream
-        - openstack-ansible-deploy-hosts_distro_lxc-debian-buster
         - openstack-ansible-deploy-hosts_distro_lxc-debian-bullseye
         - openstack-ansible-deploy-hosts_distro_lxc-ubuntu-focal
 
@@ -155,7 +145,6 @@
       jobs:
         - openstack-ansible-deploy-aio_distro_lxc-centos-8
         - openstack-ansible-deploy-aio_distro_lxc-centos-8-stream
-        - openstack-ansible-deploy-aio_distro_lxc-debian-buster
         - openstack-ansible-deploy-aio_distro_lxc-debian-bullseye
         - openstack-ansible-deploy-aio_distro_lxc-ubuntu-focal
 
@@ -163,7 +152,6 @@
     name: openstack-ansible-deploy-aio_metal-jobs
     check:
       jobs:
-        - openstack-ansible-deploy-aio_metal-debian-buster
         - openstack-ansible-deploy-aio_metal-debian-bullseye
         - openstack-ansible-deploy-aio_metal-centos-8
         - openstack-ansible-deploy-aio_metal-centos-8-stream
@@ -174,7 +162,6 @@
         - openstack-ansible-upgrade-aio_metal-ubuntu-focal
     gate:
       jobs:
-        - openstack-ansible-deploy-aio_metal-debian-buster
         - openstack-ansible-deploy-aio_metal-debian-bullseye
         - openstack-ansible-deploy-aio_metal-centos-8
         - openstack-ansible-deploy-aio_metal-centos-8-stream
@@ -187,14 +174,12 @@
       jobs:
         - openstack-ansible-deploy-aio_telemetry_metal-centos-8
         - openstack-ansible-deploy-aio_telemetry_metal-centos-8-stream
-        - openstack-ansible-deploy-aio_telemetry_metal-debian-buster
         - openstack-ansible-deploy-aio_telemetry_metal-debian-bullseye
         - openstack-ansible-deploy-aio_telemetry_metal-ubuntu-focal
     gate:
       jobs:
         - openstack-ansible-deploy-aio_telemetry_metal-centos-8
         - openstack-ansible-deploy-aio_telemetry_metal-centos-8-stream
-        - openstack-ansible-deploy-aio_telemetry_metal-debian-buster
         - openstack-ansible-deploy-aio_telemetry_metal-debian-bullseye
         - openstack-ansible-deploy-aio_telemetry_metal-ubuntu-focal