diff --git a/changelog.d/20231020_110321_chris_443_ampqs.rst b/changelog.d/20231020_110321_chris_443_ampqs.rst
new file mode 100644
index 000000000..a41934270
--- /dev/null
+++ b/changelog.d/20231020_110321_chris_443_ampqs.rst
@@ -0,0 +1,7 @@
+.. A new scriv changelog fragment.
+..
+New Functionality
+^^^^^^^^^^^^^^^^^
+
+- The ``Executor`` can now be told which port to use to listen to AMQP results, via
+  either the ``amqp_port`` keyword argument or the ``amqp_port`` property.
diff --git a/compute_sdk/globus_compute_sdk/sdk/executor.py b/compute_sdk/globus_compute_sdk/sdk/executor.py
index 01599ec9a..a96358c62 100644
--- a/compute_sdk/globus_compute_sdk/sdk/executor.py
+++ b/compute_sdk/globus_compute_sdk/sdk/executor.py
@@ -120,6 +120,7 @@ def __init__(
         user_endpoint_config: dict[str, t.Any] | None = None,
         label: str = "",
         batch_size: int = 128,
+        amqp_port: int | None = None,
         **kwargs,
     ):
         """
@@ -140,6 +141,8 @@ def __init__(
         :param batch_interval: [DEPRECATED; unused] number of seconds to coalesce tasks
             before submitting upstream
         :param batch_enabled: [DEPRECATED; unused] whether to batch results
+        :param amqp_port: Port to use when connecting to results queue. Note that the
+            Compute web services only support 5671, 5672, and 443.
         """
         deprecated_kwargs = {"batch_interval", "batch_enabled"}
         for key in kwargs:
@@ -164,6 +167,9 @@ def __init__(
         self._task_group_id: uuid.UUID | None = None  # help mypy out
         self.task_group_id = task_group_id
 
+        self._amqp_port: int | None = None
+        self.amqp_port = amqp_port
+
         self.user_endpoint_config = user_endpoint_config
 
         self.label = label
@@ -296,6 +302,19 @@ def container_id(self) -> uuid.UUID | None:
     def container_id(self, c_id: UUID_LIKE_T | None):
         self._container_id = as_optional_uuid(c_id)
 
+    @property
+    def amqp_port(self) -> int | None:
+        """
+        The port to use when connecting to the result queue. Can be one of 443, 5671,
+        5672, or None. If None, the port is assigned by the Compute web services
+        (typically 5671).
+        """
+        return self._amqp_port
+
+    @amqp_port.setter
+    def amqp_port(self, p: int | None):
+        self._amqp_port = p
+
     def _fn_cache_key(self, fn: t.Callable):
         return fn, self.container_id
 
@@ -616,7 +635,7 @@ def reload_tasks(
                             fut.set_exception(funcx_err)
 
             if pending:
-                self._result_watcher = _ResultWatcher(self)
+                self._result_watcher = _ResultWatcher(self, port=self.amqp_port)
                 self._result_watcher.watch_for_task_results(pending)
                 self._result_watcher.start()
         else:
@@ -748,14 +767,18 @@ class SubmitGroup(t.NamedTuple):
                         ):
                             # Don't initialize the result watcher unless at least
                             # one batch has been sent
-                            self._result_watcher = _ResultWatcher(self)
+                            self._result_watcher = _ResultWatcher(
+                                self, port=self.amqp_port
+                            )
                             self._result_watcher.start()
                         try:
                             self._result_watcher.watch_for_task_results(to_watch)
                         except self._result_watcher.__class__.ShuttingDownError:
                             log.debug("Waiting for previous ResultWatcher to shutdown")
                             self._result_watcher.join()
-                            self._result_watcher = _ResultWatcher(self)
+                            self._result_watcher = _ResultWatcher(
+                                self, port=self.amqp_port
+                            )
                             self._result_watcher.start()
                             self._result_watcher.watch_for_task_results(to_watch)
 
@@ -944,6 +967,7 @@ def __init__(
         connect_attempt_limit=5,
         channel_close_window_s=10,
         channel_close_window_limit=3,
+        port: int | None = None,
     ):
         super().__init__()
         self.funcx_executor = funcx_executor
@@ -988,6 +1012,8 @@ def __init__(
         # window before giving up and shutting down the thread
         self.channel_close_window_limit = channel_close_window_limit
 
+        self.port = port
+
     def __repr__(self):
         return "{}<{}; pid={}; fut={:,d}; res={:,d}; qp={}>".format(
             self.__class__.__name__,
@@ -1265,6 +1291,8 @@ def _connect(self) -> pika.SelectConnection:
             connection_url = res["connection_url"]
 
             pika_params = pika.URLParameters(connection_url)
+            if self.port is not None:
+                pika_params.port = self.port
             return pika.SelectConnection(
                 pika_params,
                 on_close_callback=self._on_connection_closed,
diff --git a/compute_sdk/tests/unit/test_executor.py b/compute_sdk/tests/unit/test_executor.py
index 59578bb56..1e0b94bb7 100644
--- a/compute_sdk/tests/unit/test_executor.py
+++ b/compute_sdk/tests/unit/test_executor.py
@@ -1089,3 +1089,17 @@ def test_resultwatcher_amqp_acks_in_bulk():
     assert not mrw._to_ack
     assert mrw._channel.basic_ack.call_count == 1
     mrw.shutdown()
+
+
+def test_result_queue_watcher_custom_port(mocker, gc_executor):
+    gcc, gce = gc_executor
+    rw = _ResultWatcher(gce, port=1234)
+    gcc.get_result_amqp_url.return_value = {
+        "queue_prefix": "",
+        "connection_url": "amqp://some.address:1111",
+    }
+    connect = mocker.patch(f"{_MOCK_BASE}pika.SelectConnection")
+
+    rw._connect()
+
+    assert connect.call_args[0][0].port == 1234