diff --git a/apps/k8s-networking/api/src/main/java/org/onosproject/k8snetworking/api/K8sNamespaceAdminService.java b/apps/k8s-networking/api/src/main/java/org/onosproject/k8snetworking/api/K8sNamespaceAdminService.java
new file mode 100644
index 0000000..697e675
--- /dev/null
+++ b/apps/k8s-networking/api/src/main/java/org/onosproject/k8snetworking/api/K8sNamespaceAdminService.java
@@ -0,0 +1,50 @@
+/*
+ * Copyright 2019-present Open Networking Foundation
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.onosproject.k8snetworking.api;
+
+import io.fabric8.kubernetes.api.model.Namespace;
+
+/**
+ * Service for administering the inventory of kubernetes namespace.
+ */
+public interface K8sNamespaceAdminService extends K8sNamespaceService {
+
+    /**
+     * Creates a kubernetes namespace with the given information.
+     *
+     * @param namespace the new kubernetes namespace
+     */
+    void createNamespace(Namespace namespace);
+
+    /**
+     * Updates the kubernetes namespace with the given information.
+     *
+     * @param namespace the updated kubernetes namespace
+     */
+    void updateNamespace(Namespace namespace);
+
+    /**
+     * Removes the kubernetes namespace.
+     *
+     * @param uid kubernetes namespace UID
+     */
+    void removeNamespace(String uid);
+
+    /**
+     * Clears the existing namespaces.
+     */
+    void clear();
+}
diff --git a/apps/k8s-networking/api/src/main/java/org/onosproject/k8snetworking/api/K8sNamespaceEvent.java b/apps/k8s-networking/api/src/main/java/org/onosproject/k8snetworking/api/K8sNamespaceEvent.java
new file mode 100644
index 0000000..f1e050c
--- /dev/null
+++ b/apps/k8s-networking/api/src/main/java/org/onosproject/k8snetworking/api/K8sNamespaceEvent.java
@@ -0,0 +1,56 @@
+/*
+ * Copyright 2019-present Open Networking Foundation
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.onosproject.k8snetworking.api;
+
+import io.fabric8.kubernetes.api.model.Namespace;
+import org.onosproject.event.AbstractEvent;
+
+/**
+ * Describes kubernetes namespace event.
+ */
+public class K8sNamespaceEvent extends AbstractEvent<K8sNamespaceEvent.Type, Namespace> {
+
+    /**
+     * Creates an event of a given type for the specified kubernetes namespace policy.
+     *
+     * @param type          kubernetes namespace event type
+     * @param subject       kubernetes namespace
+     */
+    public K8sNamespaceEvent(Type type, Namespace subject) {
+        super(type, subject);
+    }
+
+    /**
+     * Kubernetes namespace events.
+     */
+    public enum Type {
+
+        /**
+         * Signifies that a new kubernetes namespace is created.
+         */
+        K8S_NAMESPACE_CREATED,
+
+        /**
+         * Signifies that a new kubernetes namespace is updated.
+         */
+        K8S_NAMESPACE_UPDATED,
+
+        /**
+         * Signifies that a new kubernetes namespace is removed.
+         */
+        K8S_NAMESPACE_REMOVED,
+    }
+}
diff --git a/apps/k8s-networking/api/src/main/java/org/onosproject/k8snetworking/api/K8sNamespaceListener.java b/apps/k8s-networking/api/src/main/java/org/onosproject/k8snetworking/api/K8sNamespaceListener.java
new file mode 100644
index 0000000..72e9093
--- /dev/null
+++ b/apps/k8s-networking/api/src/main/java/org/onosproject/k8snetworking/api/K8sNamespaceListener.java
@@ -0,0 +1,24 @@
+/*
+ * Copyright 2019-present Open Networking Foundation
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.onosproject.k8snetworking.api;
+
+import org.onosproject.event.EventListener;
+
+/**
+ * Listener for kubernetes network policy event.
+ */
+public interface K8sNamespaceListener extends EventListener<K8sNamespaceEvent> {
+}
diff --git a/apps/k8s-networking/api/src/main/java/org/onosproject/k8snetworking/api/K8sNamespaceService.java b/apps/k8s-networking/api/src/main/java/org/onosproject/k8snetworking/api/K8sNamespaceService.java
new file mode 100644
index 0000000..1467720
--- /dev/null
+++ b/apps/k8s-networking/api/src/main/java/org/onosproject/k8snetworking/api/K8sNamespaceService.java
@@ -0,0 +1,43 @@
+/*
+ * Copyright 2019-present Open Networking Foundation
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.onosproject.k8snetworking.api;
+
+import io.fabric8.kubernetes.api.model.Namespace;
+import org.onosproject.event.ListenerService;
+
+import java.util.Set;
+
+/**
+ * Service for interacting with the inventory of kubernetes namespace.
+ */
+public interface K8sNamespaceService
+        extends ListenerService<K8sNamespaceEvent, K8sNamespaceListener> {
+
+    /**
+     * Returns the kubernetes namespaces with the supplied namespace UID.
+     *
+     * @param uid namespace UID
+     * @return kubernetes namespace
+     */
+    Namespace namespace(String uid);
+
+    /**
+     * Returns all kubernetes namespaces registered.
+     *
+     * @return set of kubernetes namespaces
+     */
+    Set<Namespace> namespaces();
+}
diff --git a/apps/k8s-networking/api/src/main/java/org/onosproject/k8snetworking/api/K8sNamespaceStore.java b/apps/k8s-networking/api/src/main/java/org/onosproject/k8snetworking/api/K8sNamespaceStore.java
new file mode 100644
index 0000000..2bc0318
--- /dev/null
+++ b/apps/k8s-networking/api/src/main/java/org/onosproject/k8snetworking/api/K8sNamespaceStore.java
@@ -0,0 +1,70 @@
+/*
+ * Copyright 2019-present Open Networking Foundation
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.onosproject.k8snetworking.api;
+
+import io.fabric8.kubernetes.api.model.Namespace;
+import org.onosproject.store.Store;
+
+import java.util.Set;
+
+/**
+ * Manages inventory of kubernetes namespace; not intended for direct use.
+ */
+public interface K8sNamespaceStore
+        extends Store<K8sNamespaceEvent, K8sNamespaceStoreDelegate> {
+
+    /**
+     * Creates the new kubernetes namespace.
+     *
+     * @param namespace kubernetes namespace
+     */
+    void createNamespace(Namespace namespace);
+
+    /**
+     * Updates the kubernetes namespace.
+     *
+     * @param namespace kubernetes namespace
+     */
+    void updateNamespace(Namespace namespace);
+
+    /**
+     * Removes the kubernetes namespace with the given namespace UID.
+     *
+     * @param uid kubernetes namespace UID
+     * @return removed kubernetes namespace; null if failed
+     */
+    Namespace removeNamespace(String uid);
+
+    /**
+     * Returns the kubernetes namespace with the given namespace UID.
+     *
+     * @param uid kubernetes namespace UID
+     * @return kubernetes namespace; null if not found
+     */
+    Namespace namespace(String uid);
+
+    /**
+     * Returns all kubernetes namespaces.
+     *
+     * @return set of kubernetes namespaces
+     */
+    Set<Namespace> namespaces();
+
+    /**
+     * Removes all kubernetes namespaces.
+     */
+    void clear();
+}
diff --git a/apps/k8s-networking/api/src/main/java/org/onosproject/k8snetworking/api/K8sNamespaceStoreDelegate.java b/apps/k8s-networking/api/src/main/java/org/onosproject/k8snetworking/api/K8sNamespaceStoreDelegate.java
new file mode 100644
index 0000000..68b39b6
--- /dev/null
+++ b/apps/k8s-networking/api/src/main/java/org/onosproject/k8snetworking/api/K8sNamespaceStoreDelegate.java
@@ -0,0 +1,24 @@
+/*
+ * Copyright 2019-present Open Networking Foundation
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.onosproject.k8snetworking.api;
+
+import org.onosproject.store.StoreDelegate;
+
+/**
+ * Kubernetes namespace store delegate abstraction.
+ */
+public interface K8sNamespaceStoreDelegate extends StoreDelegate<K8sNamespaceEvent> {
+}