diff --git a/changelogs/fragments/1338-datadog-mark-notification_message-no_log.yml b/changelogs/fragments/1338-datadog-mark-notification_message-no_log.yml
new file mode 100644
index 0000000000..49c036c3ac
--- /dev/null
+++ b/changelogs/fragments/1338-datadog-mark-notification_message-no_log.yml
@@ -0,0 +1,3 @@
+---
+minor_changes:
+  - datadog - mark ``notification_message`` as ``no_log`` (https://github.com/ansible-collections/community.general/pull/1338).
diff --git a/plugins/modules/monitoring/datadog/datadog_monitor.py b/plugins/modules/monitoring/datadog/datadog_monitor.py
index dc76cca259..f6020c2bed 100644
--- a/plugins/modules/monitoring/datadog/datadog_monitor.py
+++ b/plugins/modules/monitoring/datadog/datadog_monitor.py
@@ -211,7 +211,7 @@ def main():
             type=dict(required=False, choices=['metric alert', 'service check', 'event alert', 'process alert', 'log alert']),
             name=dict(required=True),
             query=dict(required=False),
-            notification_message=dict(required=False, default=None, aliases=['message'],
+            notification_message=dict(required=False, no_log=True, default=None, aliases=['message'],
                                       deprecated_aliases=[dict(name='message', version='3.0.0',
                                                                collection_name='community.general')]),  # was Ansible 2.14
             silenced=dict(required=False, default=None, type='dict'),