diff --git a/README.md b/README.md
index b78503f..6e2b7a1 100644
--- a/README.md
+++ b/README.md
@@ -15,4 +15,5 @@ This collection includes content for interacting with OpenStack clouds.
 - os_openstackclient
 - os_openstacksdk
 - os_projects
+- os_ratings
 - os_volumes
diff --git a/roles/os_ratings/README.md b/roles/os_ratings/README.md
new file mode 100644
index 0000000..5307d79
--- /dev/null
+++ b/roles/os_ratings/README.md
@@ -0,0 +1,88 @@
+OpenStack Cloudkitty Ratings
+============================
+
+This role can be used to register ratings in OpenStack Cloudkitty.
+
+Requirements
+------------
+
+The OpenStack Cloudkitty API should be accessible from the target host.
+
+Role Variables
+--------------
+
+`os_ratings_venv` is a path to a directory in which to create a
+virtual environment.
+
+`os_ratings_upper_constraints_file` is a file or URL containing Python
+upper constraints.
+
+`os_ratings_environment` is a dict of environment variables for use with
+OpenStack CLI. Default is empty.
+
+`os_ratings_hashmap_field_mappings` is a list of mappings associated with a
+field.  Each item is a dict with the following fields:
+* `service`
+* `name`
+* `mappings`
+The mappings field is a list, where each item is a dict with the following
+fields:
+* `value`
+* `cost`
+* `group` (optional)
+* `type`
+
+`os_ratings_hashmap_service_mappings` is a list of mappings not associated with
+a field.  Each item is a dict with the following fields:
+* `service`
+* `cost`
+* `group` (optional)
+* `type`
+
+Dependencies
+------------
+
+This role depends on the `stackhpc.openstack.os_openstackclient` role.
+
+Example Playbook
+----------------
+
+The following playbook registers a Cloudkitty flavor field with two mappings
+for different Nova flavors. It also registers a service mapping based on the
+size of images stored in Glance.
+
+```
+---
+- name: Ensure Cloudkitty ratings are registered
+  hosts: os-client
+  tasks:
+    - import_role:
+        name: stackhpc.openstack.os_ratings
+      vars:
+        os_ratings_venv: "~/os-ratings-venv"
+        os_ratings_environment:
+          OS_AUTH_URL: "{{ lookup('env', 'OS_AUTH_URL') }}"
+          ...
+        os_ratings_hashmap_field_mappings:
+          - service: instance
+            name: flavor_id
+            mappings:
+              - value: small
+                cost: 1.0
+                group: instance_uptime_flavor_id
+                type: flat
+              - value: large
+                cost: 2.0
+                group: instance_uptime_flavor_id
+                type: flat
+        os_ratings_hashmap_service_mappings:
+          - service: image.size
+            cost: 0.1
+            group: volume_ceph
+            type: flat
+```
+
+Author Information
+------------------
+
+- Mark Goddard (<mark@stackhpc.com>)
diff --git a/roles/os_ratings/defaults/main.yml b/roles/os_ratings/defaults/main.yml
new file mode 100644
index 0000000..13f862a
--- /dev/null
+++ b/roles/os_ratings/defaults/main.yml
@@ -0,0 +1,43 @@
+---
+# Path to a directory in which to create a virtualenv.
+os_ratings_venv:
+# Upper constraints file for installation of Python dependencies.
+os_ratings_upper_constraints_file: https://releases.openstack.org/constraints/upper/2023.1
+
+# Environment variables for use with OpenStack CLI.
+os_ratings_environment: {}
+# Mappings associated with a field.
+# Each item is a dict with the following fields:
+# * service
+# * name
+# * mappings
+# The mappings field is a list, where each item is a dict with the following fields:
+# * value
+# * cost
+# * group (optional)
+# * type
+# For example, for per-instance rating:
+# - service: instance
+#   name: flavor_id
+#   mappings:
+#     - value: small
+#       cost: 1.0
+#       group: instance_uptime_flavor_id
+#       type: flat
+#     - value: large
+#       cost: 2.0
+#       group: instance_uptime_flavor_id
+#       type: flat
+os_ratings_hashmap_field_mappings: []
+# Mappings not associated with a field.
+# Each item is a dict with the following fields:
+# * service
+# * cost
+# * group (optional)
+# * type
+# For example, for image image storage (MB)
+# - service: image.size
+#   cost: 0.1
+#   group: volume_ceph
+#   type: flat
+os_ratings_hashmap_service_mappings: []
diff --git a/roles/os_ratings/meta/main.yml b/roles/os_ratings/meta/main.yml
new file mode 100644
index 0000000..12caf8c
--- /dev/null
+++ b/roles/os_ratings/meta/main.yml
@@ -0,0 +1,5 @@
+---
+dependencies:
+  - role: stackhpc.openstack.os_openstackclient
+    os_openstackclient_venv: "{{ os_ratings_venv }}"
+    os_openstackclient_upper_constraints_file: "{{ os_ratings_upper_constraints_file | default(None) }}"
diff --git a/roles/os_ratings/tasks/field-mappings.yml b/roles/os_ratings/tasks/field-mappings.yml
new file mode 100644
index 0000000..f9eeb64
--- /dev/null
+++ b/roles/os_ratings/tasks/field-mappings.yml
@@ -0,0 +1,40 @@
+---
+# Task file for a single field and its mappings.
+
+- name: Create hashmap field
+  ansible.builtin.command: >
+    {{ openstack }} rating hashmap field create {{ service_id }} {{ field.name }}
+  when: field.name not in fields | map(attribute='Name') | list
+  changed_when: true
+
+# List again to get ID of created mapping.
+- name: List hashmap fields
+  ansible.builtin.command: >
+    {{ openstack }} rating hashmap field list -f json {{ service_id }}
+  register: hashmap_field
+  changed_when: false
+
+- name: List hashmap field mappings
+  vars:
+    field_id: "{{ (hashmap_field.stdout | from_json | selectattr('Name', 'equalto', field.name) | first)['Field ID'] }}"
+  ansible.builtin.command: >
+    {{ openstack }} rating hashmap mapping list -f json --field-id {{ field_id }}
+  register: hashmap_mappings
+  changed_when: false
+
+- name: Create hashmap field mappings
+  vars:
+    field_id: "{{ (hashmap_field.stdout | from_json | selectattr('Name', 'equalto', field.name) | first)['Field ID'] }}"
+    group_id: >-
+      {{ (hashmap_groups.stdout | from_json | selectattr('Name', 'equalto', item.group) | first)['Group ID'] | default('') if item.group is defined else '' }}
+  ansible.builtin.command: >
+    {{ openstack }} rating hashmap mapping create
+    {{ item.cost }}
+    --field-id {{ field_id }}
+    --value {{ item.value }}
+    {% if group_id | length > 0 %}--group-id {{ group_id }}{% endif %}
+    --type {{ item.type }}
+  loop: "{{ field.mappings }}"
+  # Condition could be better, but should work with current values.
+  when: item.value not in (hashmap_mappings.stdout | from_json | map(attribute='Value') | list)
+  changed_when: true
diff --git a/roles/os_ratings/tasks/main.yml b/roles/os_ratings/tasks/main.yml
new file mode 100644
index 0000000..5166d07
--- /dev/null
+++ b/roles/os_ratings/tasks/main.yml
@@ -0,0 +1,22 @@
+---
+- name: Ensure Cloudkitty client is installed # noqa package-latest
+  ansible.builtin.pip:
+    name:
+      - python-cloudkittyclient
+    state: latest
+    extra_args: "{% if os_ratings_upper_constraints_file %}-c {{ os_ratings_upper_constraints_file }}{% endif %}"
+    virtualenv: "{{ os_ratings_venv }}"
+  run_once: true
+
+- name: Set a fact about the Ansible python interpreter
+  ansible.builtin.set_fact:
+    old_ansible_python_interpreter: "{{ ansible_python_interpreter | default('/usr/bin/python3') }}"
+
+- name: Import ratings.yml
+  ansible.builtin.import_tasks: ratings.yml
+  vars:
+    ansible_python_interpreter: "{{ os_ratings_venv ~ '/bin/python' if os_ratings_venv != None else old_ansible_python_interpreter }}"
+    openstack: "{{ os_ratings_venv ~ '/bin/' if os_ratings_venv else '' }}openstack"
+    os_ratings_hashmap_field_mapping_services: "{{ os_ratings_hashmap_field_mappings | map(attribute='service') | list }}"
+    os_ratings_hashmap_service_mapping_services: "{{ os_ratings_hashmap_service_mappings | map(attribute='service') | list }}"
+  environment: "{{ os_ratings_environment }}"
diff --git a/roles/os_ratings/tasks/ratings.yml b/roles/os_ratings/tasks/ratings.yml
new file mode 100644
index 0000000..4e7bc9d
--- /dev/null
+++ b/roles/os_ratings/tasks/ratings.yml
@@ -0,0 +1,110 @@
+---
+- name: List modules
+  ansible.builtin.command: >
+    {{ openstack }} rating module list -f json
+  register: modules
+  changed_when: false
+
+- name: Enable hashmap module
+  ansible.builtin.command: >
+    {{ openstack }} rating module enable hashmap
+  when: not (modules.stdout | from_json | selectattr('Module', 'equalto', 'hashmap') | first)['Enabled'] | bool
+  changed_when: true
+
+- name: List hashmap services
+  ansible.builtin.command: >
+    {{ openstack }} rating hashmap service list -f json
+  register: hashmap_services
+  changed_when: false
+
+- name: Create hashmap services
+  vars:
+    existing_services: "{{ hashmap_services.stdout | from_json | map(attribute='Name') | list }}"
+  ansible.builtin.command: >
+    {{ openstack }} rating hashmap service create {{ item }}
+  loop: "{{ (os_ratings_hashmap_field_mapping_services + os_ratings_hashmap_service_mapping_services) | unique | list }}"
+  when: item not in existing_services
+  changed_when: true
+
+- name: List hashmap groups
+  ansible.builtin.command: >
+    {{ openstack }} rating hashmap group list -f json
+  register: hashmap_groups
+  changed_when: false
+
+- name: Create hashmap groups
+  vars:
+    existing_groups: "{{ hashmap_groups.stdout | from_json | map(attribute='Name') | list }}"
+    field_mapping_groups: "{{ query('subelements', os_ratings_hashmap_field_mappings, 'mappings') | map(attribute='1.group') | select('defined') | list }}"
+    service_mapping_groups: "{{ os_ratings_hashmap_service_mappings | map(attribute='group') | select('defined') | list }}"
+  ansible.builtin.command: >
+    {{ openstack }} rating hashmap group create {{ item }}
+  loop: "{{ (field_mapping_groups + service_mapping_groups) | unique | list }}"
+  when:
+    - item is not none and item | length > 0
+    - item not in existing_groups
+  changed_when: true
+
+# List again to get IDs of created services.
+- name: List hashmap services
+  ansible.builtin.command: >
+    {{ openstack }} rating hashmap service list -f json
+  register: hashmap_services
+  changed_when: false
+
+# List again to get IDs of created groups.
+- name: List hashmap groups
+  ansible.builtin.command: >
+    {{ openstack }} rating hashmap group list -f json
+  register: hashmap_groups
+  changed_when: false
+
+- name: List hashmap fields
+  vars:
+    service_id: "{{ (hashmap_services.stdout | from_json | selectattr('Name', 'equalto', item) | first)['Service ID'] }}"
+  ansible.builtin.command: >
+    {{ openstack }} rating hashmap field list {{ service_id }} -f json
+  loop: "{{ os_ratings_hashmap_field_mapping_services }}"
+  register: hashmap_fields
+  changed_when: false
+
+# Field mappings
+
+- name: Include field mappings
+  ansible.builtin.include_tasks: field-mappings.yml
+  vars:
+    fields_result: "{{ hashmap_fields.results | selectattr('item', 'equalto', field.service) | first }}"
+    fields: "{{ fields_result.stdout | from_json }}"
+    service_id: "{{ (hashmap_services.stdout | from_json | selectattr('Name', 'equalto', field.service) | first)['Service ID'] }}"
+  loop: "{{ os_ratings_hashmap_field_mappings }}"
+  loop_control:
+    loop_var: field
+
+# Service mappings
+
+- name: List hashmap service mappings
+  vars:
+    service_id: "{{ (hashmap_services.stdout | from_json | selectattr('Name', 'equalto', item) | first)['Service ID'] }}"
+  ansible.builtin.command: >
+    {{ openstack }} rating hashmap mapping list -f json --service-id {{ service_id }}
+  loop: "{{ os_ratings_hashmap_service_mapping_services }}"
+  register: hashmap_mappings
+  changed_when: false
+
+- name: Create hashmap service mappings
+  vars:
+    mappings_result: "{{ hashmap_mappings.results | selectattr('item', 'equalto', item.service) | first }}"
+    mappings: "{{ mappings_result.stdout | from_json }}"
+    service_id: "{{ (hashmap_services.stdout | from_json | selectattr('Name', 'equalto', item.service) | first)['Service ID'] }}"
+    group_id: "{{ (hashmap_groups.stdout | from_json | selectattr('Name', 'equalto', item.group) | first)['Group ID'] | default('') if item.group is defined else
+      '' }}"
+  ansible.builtin.command: >
+    {{ openstack }} rating hashmap mapping create
+    {{ item.cost }}
+    --service-id {{ service_id }}
+    {% if group_id | length > 0 %}--group-id {{ group_id }}{% endif %}
+    --type {{ item.type }}
+  loop: "{{ os_ratings_hashmap_service_mappings }}"
+  # Condition could be better, but should work with current values.
+  when: mappings | length == 0
+  changed_when: true