diff --git a/entity-types/infra-ocinatgateway/definition.stg.yml b/entity-types/infra-ocinatgateway/definition.stg.yml
new file mode 100644
index 000000000..c6e9181f0
--- /dev/null
+++ b/entity-types/infra-ocinatgateway/definition.stg.yml
@@ -0,0 +1,31 @@
+domain: INFRA
+type: OCINATGATEWAY
+goldenTags:
+- oci.compartmentId
+- oci.displayName
+- oci.lifecycleState
+- oci.region
+configuration:
+  entityExpirationTime: DAILY
+  alertable: true
+synthesis:
+  tags:
+    newrelic.cloudIntegrations.providerAccountName:
+      entityTagNames: [newrelic.cloudIntegrations.providerAccountName, providerAccountName]
+      multiValue: false
+  rules:
+  - ruleName: infra_ocinatgateway_oci_resourceId
+    identifier: oci.resourceId
+    name: oci.resourceName
+    legacyFeatures:
+      overrideGuidType: true
+    encodeIdentifierInGUID: true
+    conditions:
+    - attribute: oci.resourceId
+      prefix: "ocid1.natgateway"
+    - attribute: oci.namespace
+      value: "oci_nat_gateway"
+
+ownership:
+  primaryOwner:
+    teamName: "Cloud Monitoring Platform"
diff --git a/entity-types/infra-ocinatgateway/golden_metrics.stg.yml b/entity-types/infra-ocinatgateway/golden_metrics.stg.yml
new file mode 100644
index 000000000..dae4aced5
--- /dev/null
+++ b/entity-types/infra-ocinatgateway/golden_metrics.stg.yml
@@ -0,0 +1,36 @@
+bytesFromNatGateway:
+  title: Bytes From NAT Gateway
+  unit: BYTES
+  queries:
+    oci:
+      select: sum(`oci.nat.gateway.bytes.from.natgw`)
+      from: Metric
+      eventId: entity.guid
+      eventName: entity.name
+bytesToNatGateway:
+  title: Bytes To NAT Gateway
+  unit: BYTES
+  queries:
+    oci:
+      select: sum(`oci.nat.gateway.bytes.to.natgw`)
+      from: Metric
+      eventId: entity.guid
+      eventName: entity.name
+connectionsEstablished:
+  title: Connections Established
+  unit: COUNT
+  queries:
+    oci:
+      select: sum(`oci.nat.gateway.connections.established`)
+      from: Metric
+      eventId: entity.guid
+      eventName: entity.name
+dropsToNatGateway:
+  title: Drops To NAT Gateway
+  unit: COUNT
+  queries:
+    oci:
+      select: sum(`oci.nat.gateway.drops.to.natgw`)
+      from: Metric
+      eventId: entity.guid
+      eventName: entity.name
diff --git a/entity-types/infra-ocinatgateway/summary_metrics.stg.yml b/entity-types/infra-ocinatgateway/summary_metrics.stg.yml
new file mode 100644
index 000000000..8a07f0e9a
--- /dev/null
+++ b/entity-types/infra-ocinatgateway/summary_metrics.stg.yml
@@ -0,0 +1,21 @@
+providerAccountName:
+  tag:
+    key: providerAccountName
+  title: OCI account
+  unit: STRING
+bytesFromNatGateway:
+  goldenMetric: bytesFromNatGateway
+  unit: BYTES
+  title: Bytes From NAT Gateway
+bytesToNatGateway:
+  goldenMetric: bytesToNatGateway
+  unit: BYTES
+  title: Bytes To NAT Gateway
+connectionsEstablished:
+  goldenMetric: connectionsEstablished
+  unit: COUNT
+  title: Connections Established
+dropsToNatGateway:
+  goldenMetric: dropsToNatGateway
+  unit: COUNT
+  title: Drops To NAT Gateway
diff --git a/entity-types/infra-ocinatgateway/tests/Metric.stg.json b/entity-types/infra-ocinatgateway/tests/Metric.stg.json
new file mode 100644
index 000000000..22f482e2c
--- /dev/null
+++ b/entity-types/infra-ocinatgateway/tests/Metric.stg.json
@@ -0,0 +1,25 @@
+[
+  {
+    "oci.compartmentId": "ocid1.compartment.oc1..aaaaaaaabbbbbbccccccccdddddddeeeeeeefffffffgggggggghhhhhhhhiiiiiiiiijjjjjjjj",
+    "oci.namespace": "oci_nat_gateway",
+    "oci.region": "us-ashburn-1",
+    "oci.resourceId": "ocid1.natgateway.oc1.us-ashburn-1.aaaaaaaabbbbbbccccccccdddddddeeeeeeefffffffgggggggghhhhhhhhiiiiiiiiijjjjjjjj",
+    "oci.resourceName": "test-nat-gateway",
+    "oci.lifecycleState": "AVAILABLE",
+    "collector.name": "oci-monitor",
+    "collector.version": "release-007",
+    "displayName": "test-nat-gateway",
+    "endTimestamp": 1746680903,
+    "instrumentation.provider": "oci",
+    "metricName": "oci.nat.gateway.bytes.from.natgw",
+    "newrelic.cloudIntegrations.integrationId": "1",
+    "newrelic.cloudIntegrations.integrationName": "OCI Monitor metrics",
+    "newrelic.cloudIntegrations.providerAccountId": "1",
+    "newrelic.cloudIntegrations.providerAccountName": "oci-dev-all-metrics",
+    "newrelic.cloudIntegrations.providerExternalId": "9bcb5134-f0a6-11ed-a05b-0242ac120003",
+    "newrelic.source": "metricAPI",
+    "nr.entity.id": "-2281987194047346712",
+    "tags.owner": "test",
+    "timestamp": 1746680903
+  }
+]