diff --git a/diagrams/onprem/monitoring.py b/diagrams/onprem/monitoring.py
index 3da377c..96bf956 100644
--- a/diagrams/onprem/monitoring.py
+++ b/diagrams/onprem/monitoring.py
@@ -28,6 +28,10 @@ class Humio(_Monitoring):
     _icon = "humio.png"
 
 
+class Nagios(_Monitoring):
+    _icon = "nagios.png"
+
+
 class Newrelic(_Monitoring):
     _icon = "newrelic.png"
 
diff --git a/docs/nodes/onprem.md b/docs/nodes/onprem.md
index 0df79e7..405cd71 100644
--- a/docs/nodes/onprem.md
+++ b/docs/nodes/onprem.md
@@ -158,6 +158,7 @@ Node classes list of onprem provider.
 - **diagrams.onprem.monitoring.Grafana**
 - **diagrams.onprem.monitoring.Humio**
 - **diagrams.onprem.monitoring.Newrelic**
+- **diagrams.onprem.monitoring.Nagios**
 - **diagrams.onprem.monitoring.PrometheusOperator**
 - **diagrams.onprem.monitoring.Prometheus**
 - **diagrams.onprem.monitoring.Sentry**
diff --git a/resources/onprem/monitoring/nagios.png b/resources/onprem/monitoring/nagios.png
new file mode 100644
index 0000000..a4e40c4
Binary files /dev/null and b/resources/onprem/monitoring/nagios.png differ