diff --git a/src/applications/maniphest/query/ManiphestTaskQuery.php b/src/applications/maniphest/query/ManiphestTaskQuery.php
--- a/src/applications/maniphest/query/ManiphestTaskQuery.php
+++ b/src/applications/maniphest/query/ManiphestTaskQuery.php
@@ -11,6 +11,7 @@
 
   private $taskIDs             = array();
   private $taskPHIDs           = array();
+  private $dependentTaskIDs    = array();
   private $authorPHIDs         = array();
   private $ownerPHIDs          = array();
   private $includeUnowned      = null;
@@ -70,6 +71,11 @@
     return $this;
   }
 
+  public function withDependentIDs(array $ids) {
+    $this->dependentTaskIDs = $ids;
+    return $this;
+  }
+
   public function withOwners(array $owners) {
     $this->includeUnowned = false;
     foreach ($owners as $k => $phid) {
@@ -195,6 +201,7 @@
     $where = array();
     $where[] = $this->buildTaskIDsWhereClause($conn);
     $where[] = $this->buildTaskPHIDsWhereClause($conn);
+    $where[] = $this->buildDependentTaskIDsWhereClause($conn);
     $where[] = $this->buildStatusWhereClause($conn);
     $where[] = $this->buildStatusesWhereClause($conn);
     $where[] = $this->buildPrioritiesWhereClause($conn);
@@ -357,6 +364,26 @@
       $this->taskPHIDs);
   }
 
+  private function buildDependentTaskIDsWhereClause(
+    AphrontDatabaseConnection $conn) {
+    if (!$this->dependentTaskIDs) {
+      return null;
+    }
+
+    $dependent_tasks = id(new ManiphestTaskQuery())
+      ->setViewer($this->getViewer())
+      ->withIDs($this->dependentTaskIDs)
+      ->execute();
+
+    $dependent_task_phids = mpull($dependent_tasks, 'getPHID');
+
+    return qsprintf(
+      $conn,
+      'edge.type = %s AND edge.dst IN (%Ls)',
+      PhabricatorEdgeConfig::TYPE_TASK_DEPENDED_ON_BY_TASK,
+      $dependent_task_phids);
+  }
+
   private function buildStatusWhereClause(AphrontDatabaseConnection $conn) {
 
     static $map = array(
@@ -646,6 +673,12 @@
 
     $joins = array();
 
+    if ($this->dependentTaskIDs) {
+      $joins[] = qsprintf(
+        $conn_r,
+        'JOIN edge ON edge.src = task.phid');
+    }
+
     if ($this->projectPHIDs || $this->includeNoProject) {
       $joins[] = qsprintf(
         $conn_r,
diff --git a/src/applications/maniphest/query/ManiphestTaskSearchEngine.php b/src/applications/maniphest/query/ManiphestTaskSearchEngine.php
--- a/src/applications/maniphest/query/ManiphestTaskSearchEngine.php
+++ b/src/applications/maniphest/query/ManiphestTaskSearchEngine.php
@@ -77,6 +77,17 @@
     }
     $saved->setParameter('ids', $ids);
 
+    $dependent_ids = $request->getStrList('dependentIds');
+    foreach ($dependent_ids as $key => $id) {
+      $id = trim($id, ' Tt');
+      if (!$id || !is_numeric($id)) {
+        unset($ids[$key]);
+      } else {
+        $dependent_ids[$key] = $id;
+      }
+    }
+    $saved->setParameter('dependentIds', $dependent_ids);
+
     $saved->setParameter('fulltext', $request->getStr('fulltext'));
 
     $saved->setParameter(
@@ -168,6 +179,11 @@
       $query->withIDs($ids);
     }
 
+    $dependent_ids = $saved->getParameter('dependentIds');
+    if ($dependent_ids) {
+      $query->withDependentIDs($dependent_ids);
+    }
+
     $fulltext = $saved->getParameter('fulltext');
     if (strlen($fulltext)) {
       $query->withFullTextSearch($fulltext);
@@ -301,6 +317,7 @@
     }
 
     $ids = $saved->getParameter('ids', array());
+    $dependent_ids = $saved->getParameter('dependentIds', array());
 
     $form
       ->appendChild(
@@ -394,7 +411,12 @@
         id(new AphrontFormTextControl())
           ->setName('ids')
           ->setLabel(pht('Task IDs'))
-          ->setValue(implode(', ', $ids)));
+          ->setValue(implode(', ', $ids)))
+      ->appendChild(
+        id(new AphrontFormTextControl())
+          ->setName('dependentIds')
+          ->setLabel(pht('Dependent Task IDs'))
+          ->setValue(implode(', ', $dependent_ids)));
 
     $this->appendCustomFieldsToForm($form, $saved);