diff --git a/src/applications/differential/query/DifferentialRevisionQuery.php b/src/applications/differential/query/DifferentialRevisionQuery.php
--- a/src/applications/differential/query/DifferentialRevisionQuery.php
+++ b/src/applications/differential/query/DifferentialRevisionQuery.php
@@ -38,6 +38,7 @@
   private $branches = array();
   private $arcanistProjectPHIDs = array();
   private $repositoryPHIDs;
+  private $anyProjectPHIDs = array();
 
   private $order            = 'order-modified';
   const ORDER_MODIFIED      = 'order-modified';
@@ -253,6 +254,10 @@
     return $this;
   }
 
+  public function withAnyProjects(array $projects) {
+    $this->anyProjectPHIDs = $projects;
+    return $this;
+  }
 
   /**
    * Set result ordering. Provide a class constant, such as
@@ -675,6 +680,16 @@
         DifferentialRevision::TABLE_COMMIT);
     }
 
+    if ($this->anyProjectPHIDs) {
+      $edge_table = PhabricatorEdgeConfig::TABLE_NAME_EDGE;
+      $joins[] = qsprintf(
+        $conn_r,
+        'JOIN %T anyproject ON anyproject.src = r.phid
+          AND anyproject.type = %d',
+        $edge_table,
+        PhabricatorProjectObjectHasProjectEdgeType::EDGECONST);
+    }
+
     $joins = implode(' ', $joins);
 
     return $joins;
@@ -817,9 +832,21 @@
     }
 
     $where[] = $this->buildPagingClause($conn_r);
+    $where[] = $this->buildAnyProjectWhereClause($conn_r);
+
     return $this->formatWhereClause($where);
   }
 
+  private function buildAnyProjectWhereClause(AphrontDatabaseConnection $conn) {
+    if (!$this->anyProjectPHIDs) {
+      return null;
+    }
+
+    return qsprintf(
+      $conn,
+      'anyproject.dst IN (%Ls)',
+      $this->anyProjectPHIDs);
+  }
 
   /**
    * @task internal
diff --git a/src/applications/differential/query/DifferentialRevisionSearchEngine.php b/src/applications/differential/query/DifferentialRevisionSearchEngine.php
--- a/src/applications/differential/query/DifferentialRevisionSearchEngine.php
+++ b/src/applications/differential/query/DifferentialRevisionSearchEngine.php
@@ -43,6 +43,10 @@
       $this->readUsersFromRequest($request, 'subscribers'));
 
     $saved->setParameter(
+      'anyProjectPHIDs',
+      $this->readPHIDsFromRequest($request, 'anyProjects'));
+
+    $saved->setParameter(
       'repositoryPHIDs',
       $request->getArr('repositories'));
 
@@ -92,6 +96,11 @@
       $query->withRepositoryPHIDs($repository_phids);
     }
 
+    $any_project_phids = $saved->getParameter('anyProjectPHIDs');
+    if ($any_project_phids) {
+      $query->withAnyProjects($any_project_phids);
+    }
+
     $draft = $saved->getParameter('draft', false);
     if ($draft && $this->requireViewer()->isLoggedIn()) {
       $query->withDraftRepliesByAuthors(
@@ -122,6 +131,8 @@
     $reviewer_phids = $saved->getParameter('reviewerPHIDs', array());
     $subscriber_phids = $saved->getParameter('subscriberPHIDs', array());
     $repository_phids = $saved->getParameter('repositoryPHIDs', array());
+    $any_project_phids = $saved->getParameter('anyProjectPHIDs', array());
+
     $only_draft = $saved->getParameter('draft', false);
 
     $all_phids = array_mergev(
@@ -131,6 +142,7 @@
         $reviewer_phids,
         $subscriber_phids,
         $repository_phids,
+        $any_project_phids,
       ));
 
     $handles = id(new PhabricatorHandleQuery())
@@ -170,6 +182,12 @@
           ->setDatasource(new DiffusionRepositoryDatasource())
           ->setValue(array_select_keys($handles, $repository_phids)))
       ->appendChild(
+        id(new AphrontFormTokenizerControl())
+          ->setLabel(pht('In Any Project'))
+          ->setName('anyProjects')
+          ->setDatasource(new PhabricatorProjectDatasource())
+          ->setValue(array_select_keys($handles, $any_project_phids)))
+      ->appendChild(
         id(new AphrontFormSelectControl())
           ->setLabel(pht('Status'))
           ->setName('status')