diff --git a/src/__phutil_library_map__.php b/src/__phutil_library_map__.php
--- a/src/__phutil_library_map__.php
+++ b/src/__phutil_library_map__.php
@@ -2586,6 +2586,7 @@
     'PhabricatorSpacesNamespaceSearchEngine' => 'applications/spaces/query/PhabricatorSpacesNamespaceSearchEngine.php',
     'PhabricatorSpacesNamespaceTransaction' => 'applications/spaces/storage/PhabricatorSpacesNamespaceTransaction.php',
     'PhabricatorSpacesNamespaceTransactionQuery' => 'applications/spaces/query/PhabricatorSpacesNamespaceTransactionQuery.php',
+    'PhabricatorSpacesRemarkupRule' => 'applications/spaces/remarkup/PhabricatorSpacesRemarkupRule.php',
     'PhabricatorSpacesTestCase' => 'applications/spaces/__tests__/PhabricatorSpacesTestCase.php',
     'PhabricatorSpacesViewController' => 'applications/spaces/controller/PhabricatorSpacesViewController.php',
     'PhabricatorStandardCustomField' => 'infrastructure/customfield/standard/PhabricatorStandardCustomField.php',
@@ -6093,6 +6094,7 @@
     'PhabricatorSpacesNamespaceSearchEngine' => 'PhabricatorApplicationSearchEngine',
     'PhabricatorSpacesNamespaceTransaction' => 'PhabricatorApplicationTransaction',
     'PhabricatorSpacesNamespaceTransactionQuery' => 'PhabricatorApplicationTransactionQuery',
+    'PhabricatorSpacesRemarkupRule' => 'PhabricatorObjectRemarkupRule',
     'PhabricatorSpacesTestCase' => 'PhabricatorTestCase',
     'PhabricatorSpacesViewController' => 'PhabricatorSpacesController',
     'PhabricatorStandardCustomField' => 'PhabricatorCustomField',
diff --git a/src/applications/spaces/application/PhabricatorSpacesApplication.php b/src/applications/spaces/application/PhabricatorSpacesApplication.php
--- a/src/applications/spaces/application/PhabricatorSpacesApplication.php
+++ b/src/applications/spaces/application/PhabricatorSpacesApplication.php
@@ -38,6 +38,12 @@
     return true;
   }
 
+  public function getRemarkupRules() {
+    return array(
+      new PhabricatorSpacesRemarkupRule(),
+    );
+  }
+
   public function getRoutes() {
     return array(
       '/S(?P<id>[1-9]\d*)' => 'PhabricatorSpacesViewController',
diff --git a/src/applications/spaces/remarkup/PhabricatorSpacesRemarkupRule.php b/src/applications/spaces/remarkup/PhabricatorSpacesRemarkupRule.php
new file mode 100644
--- /dev/null
+++ b/src/applications/spaces/remarkup/PhabricatorSpacesRemarkupRule.php
@@ -0,0 +1,18 @@
+<?php
+
+final class PhabricatorSpacesRemarkupRule
+  extends PhabricatorObjectRemarkupRule {
+
+  protected function getObjectNamePrefix() {
+    return 'S';
+  }
+
+  protected function loadObjects(array $ids) {
+    $viewer = $this->getEngine()->getConfig('viewer');
+    return id(new PhabricatorSpacesNamespaceQuery())
+      ->setViewer($viewer)
+      ->withIDs($ids)
+      ->execute();
+  }
+
+}