diff --git a/releasenotes/notes/add-compute-server-evaculate-client-as-a-library-ed76baf25f02c3ca.yaml b/releasenotes/notes/add-compute-server-evaculate-client-as-a-library-ed76baf25f02c3ca.yaml
new file mode 100644
index 0000000..848a21b
--- /dev/null
+++ b/releasenotes/notes/add-compute-server-evaculate-client-as-a-library-ed76baf25f02c3ca.yaml
@@ -0,0 +1,3 @@
+---
+features:
+    - Define the compute server evacuate client method in the servers_client library.
diff --git a/tempest/lib/api_schema/response/compute/v2_1/servers.py b/tempest/lib/api_schema/response/compute/v2_1/servers.py
index 4ccca6f..4c4b5eb 100644
--- a/tempest/lib/api_schema/response/compute/v2_1/servers.py
+++ b/tempest/lib/api_schema/response/compute/v2_1/servers.py
@@ -564,3 +564,19 @@
 update_attached_volume = {
     'status_code': [202]
 }
+
+evacuate_server = {
+    'status_code': [200]
+}
+
+evacuate_server_with_admin_pass = {
+    'status_code': [200],
+    'response_body': {
+        'type': 'object',
+        'properties': {
+            'adminPass': {'type': 'string'}
+        },
+        'additionalProperties': False,
+        'required': ['adminPass']
+    }
+}
diff --git a/tempest/lib/services/compute/servers_client.py b/tempest/lib/services/compute/servers_client.py
index b37afb3..0d355a1 100644
--- a/tempest/lib/services/compute/servers_client.py
+++ b/tempest/lib/services/compute/servers_client.py
@@ -814,3 +814,19 @@
         schema = self.get_schema(self.schema_versions_info)
         self.validate_response(schema.delete_tag, resp, body)
         return rest_client.ResponseBody(resp, body)
+
+    def evacuate_server(self, server_id, **kwargs):
+        """Evacuate the given server.
+
+        For a full list of available parameters, please refer to the official
+        API reference:
+        https://developer.openstack.org/api-ref/compute/#evacuate-server-evacuate-action
+        """
+        if self.enable_instance_password:
+            evacuate_schema = schema.evacuate_server_with_admin_pass
+        else:
+            evacuate_schema = schema.evacuate_server
+
+        return self.action(server_id, 'evacuate',
+                           evacuate_schema,
+                           **kwargs)
diff --git a/tempest/tests/lib/services/compute/test_servers_client.py b/tempest/tests/lib/services/compute/test_servers_client.py
index 8d391c1..a277dfe 100644
--- a/tempest/tests/lib/services/compute/test_servers_client.py
+++ b/tempest/tests/lib/services/compute/test_servers_client.py
@@ -168,6 +168,10 @@
         "url": "http://os.co/v2/616fb98f-46ca-475e-917e-2563e5a8cd19"
     }
 
+    FAKE_SERVER_PASSWORD = {
+        "adminPass": "fake-password",
+    }
+
     FAKE_INSTANCE_ACTION_EVENTS = {
         "event": "fake-event",
         "start_time": "2016-10-02T10:00:00-05:00",
@@ -322,6 +326,21 @@
             name='fake-name'
             )
 
+    def test_evacuate_server_with_str_body(self):
+        self._test_evacuate_server()
+
+    def test_evacuate_server_with_bytes_body(self):
+        self._test_evacuate_server(bytes_body=True)
+
+    def _test_evacuate_server(self, bytes_body=False):
+        kwargs = {'server_id': self.server_id,
+                  'host': 'fake-target-host'}
+        self.check_service_client_function(
+            self.client.evacuate_server,
+            'tempest.lib.common.rest_client.RestClient.post',
+            self.FAKE_SERVER_PASSWORD,
+            **kwargs)
+
     def test_change_password_with_str_body(self):
         self._test_change_password()