diff --git a/changelogs/fragments/fix-tmpfs_size-and-tmpfs_mode.yml b/changelogs/fragments/fix-tmpfs_size-and-tmpfs_mode.yml
new file mode 100644
index 000000000..bdb25d268
--- /dev/null
+++ b/changelogs/fragments/fix-tmpfs_size-and-tmpfs_mode.yml
@@ -0,0 +1,2 @@
+bugfixes:
+  - docker_container - fix ``tmfs_size`` and ``tmpfs_mode`` not being set (https://github.com/ansible-collections/community.docker/pull/580).
diff --git a/plugins/module_utils/module_container/docker_api.py b/plugins/module_utils/module_container/docker_api.py
index 1cb6d8bca..cccf72df4 100644
--- a/plugins/module_utils/module_container/docker_api.py
+++ b/plugins/module_utils/module_container/docker_api.py
@@ -994,8 +994,8 @@ def _set_values_mounts(module, data, api_version, options, values):
                     tmpfs_opts['Mode'] = mount.get('tmpfs_mode')
                 if mount.get('tmpfs_size'):
                     tmpfs_opts['SizeBytes'] = mount.get('tmpfs_size')
-                if mount.get('tmpfs_opts'):
-                    mount_res['TmpfsOptions'] = mount.get('tmpfs_opts')
+                if tmpfs_opts:
+                    mount_res['TmpfsOptions'] = tmpfs_opts
             mounts.append(mount_res)
         data['HostConfig']['Mounts'] = mounts
     if 'volumes' in values:
diff --git a/plugins/modules/docker_container.py b/plugins/modules/docker_container.py
index 5d62455ff..9d1ed416e 100644
--- a/plugins/modules/docker_container.py
+++ b/plugins/modules/docker_container.py
@@ -1165,6 +1165,17 @@
       # The "NONE" check needs to be specified
       test: ["NONE"]
 
+- name: Create a tmpfs with a size and mode
+  community.docker.docker_container:
+    name: tmpfs test
+    image: ubuntu:22.04
+    state: started
+    mounts:
+      - type: tmpfs
+        target: /cache
+        tmpfs_mode: "1700" # only readable to the owner
+        tmpfs_size: "16G"
+
 - name: Start container with block device read limit
   community.docker.docker_container:
     name: test
diff --git a/tests/integration/targets/docker_container/tasks/tests/mounts-volumes.yml b/tests/integration/targets/docker_container/tasks/tests/mounts-volumes.yml
index cdfbf2ece..646f6b6e5 100644
--- a/tests/integration/targets/docker_container/tasks/tests/mounts-volumes.yml
+++ b/tests/integration/targets/docker_container/tasks/tests/mounts-volumes.yml
@@ -161,6 +161,111 @@
     - mounts_7 is changed
     - mounts_8 is not changed
 
+####################################################################
+## tmpfs ###########################################################
+####################################################################
+
+- name: tmpfs
+  docker_container:
+    image: "{{ docker_test_image_alpine }}"
+    command: '/bin/sh -c "sleep 10m"'
+    name: "{{ cname }}"
+    state: started
+    mounts:
+    - target: /cache1
+      type: tmpfs
+      tmpfs_mode: "1777"
+      tmpfs_size: "1GB"
+    - target: /cache2
+      type: tmpfs
+      tmpfs_mode: "1777"
+      tmpfs_size: "1GB"
+    force_kill: true
+  register: tmpfs_1
+
+- name: tmpfs (idempotency)
+  docker_container:
+    image: "{{ docker_test_image_alpine }}"
+    command: '/bin/sh -c "sleep 10m"'
+    name: "{{ cname }}"
+    state: started
+    mounts:
+    - target: /cache2
+      type: tmpfs
+      tmpfs_mode: "1777"
+      tmpfs_size: "1GB"
+    - target: /cache1
+      type: tmpfs
+      tmpfs_mode: "1777"
+      tmpfs_size: "1GB"
+    force_kill: true
+  register: tmpfs_2
+
+- name: tmpfs (more mounts)
+  docker_container:
+    image: "{{ docker_test_image_alpine }}"
+    command: '/bin/sh -c "sleep 10m"'
+    name: "{{ cname }}"
+    state: started
+    mounts:
+    - target: /cache1
+      type: tmpfs
+      tmpfs_mode: "1777"
+      tmpfs_size: "1GB"
+    - target: /cache2
+      type: tmpfs
+      tmpfs_mode: "1777"
+      tmpfs_size: "1GB"
+    - target: /cache3
+      type: tmpfs
+      tmpfs_mode: "1777"
+      tmpfs_size: "1GB"
+    force_kill: true
+  register: tmpfs_3
+
+- name: tmpfs (change mode)
+  docker_container:
+    image: "{{ docker_test_image_alpine }}"
+    command: '/bin/sh -c "sleep 10m"'
+    name: "{{ cname }}"
+    state: started
+    mounts:
+    - target: /cache1
+      type: tmpfs
+      tmpfs_mode: "1700"
+      tmpfs_size: "1GB"
+    force_kill: true
+  register: tmpfs_4
+
+- name: tmpfs (change size)
+  docker_container:
+    image: "{{ docker_test_image_alpine }}"
+    command: '/bin/sh -c "sleep 10m"'
+    name: "{{ cname }}"
+    state: started
+    mounts:
+    - target: /cache1
+      type: tmpfs
+      tmpfs_mode: "1700"
+      tmpfs_size: "2GB"
+    force_kill: true
+  register: tmpfs_5
+
+- name: cleanup
+  docker_container:
+    name: "{{ cname }}"
+    state: absent
+    force_kill: yes
+  diff: no
+
+- assert:
+    that:
+    - tmpfs_1 is changed
+    - tmpfs_2 is not changed
+    - tmpfs_3 is changed
+    - tmpfs_4 is changed
+    - tmpfs_5 is changed
+
 ####################################################################
 ## mounts + volumes ################################################
 ####################################################################