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
@@ -4809,6 +4809,7 @@
     'PhabricatorTransactionsApplication' => 'applications/transactions/application/PhabricatorTransactionsApplication.php',
     'PhabricatorTransactionsDestructionEngineExtension' => 'applications/transactions/engineextension/PhabricatorTransactionsDestructionEngineExtension.php',
     'PhabricatorTransactionsFulltextEngineExtension' => 'applications/transactions/engineextension/PhabricatorTransactionsFulltextEngineExtension.php',
+    'PhabricatorTransactionsObjectTypeDatasource' => 'applications/transactions/typeahead/PhabricatorTransactionsObjectTypeDatasource.php',
     'PhabricatorTransformedFile' => 'applications/files/storage/PhabricatorTransformedFile.php',
     'PhabricatorTranslationSetting' => 'applications/settings/setting/PhabricatorTranslationSetting.php',
     'PhabricatorTranslationsConfigOptions' => 'applications/config/option/PhabricatorTranslationsConfigOptions.php',
@@ -11158,6 +11159,7 @@
     'PhabricatorTransactionsApplication' => 'PhabricatorApplication',
     'PhabricatorTransactionsDestructionEngineExtension' => 'PhabricatorDestructionEngineExtension',
     'PhabricatorTransactionsFulltextEngineExtension' => 'PhabricatorFulltextEngineExtension',
+    'PhabricatorTransactionsObjectTypeDatasource' => 'PhabricatorTypeaheadDatasource',
     'PhabricatorTransformedFile' => 'PhabricatorFileDAO',
     'PhabricatorTranslationSetting' => 'PhabricatorOptionGroupSetting',
     'PhabricatorTranslationsConfigOptions' => 'PhabricatorApplicationConfigOptions',
diff --git a/src/applications/feed/query/PhabricatorFeedTransactionQuery.php b/src/applications/feed/query/PhabricatorFeedTransactionQuery.php
--- a/src/applications/feed/query/PhabricatorFeedTransactionQuery.php
+++ b/src/applications/feed/query/PhabricatorFeedTransactionQuery.php
@@ -5,6 +5,7 @@
 
   private $phids;
   private $authorPHIDs;
+  private $objectTypes;
   private $createdMin;
   private $createdMax;
 
@@ -18,6 +19,11 @@
     return $this;
   }
 
+  public function withObjectTypes(array $types) {
+    $this->objectTypes = $types;
+    return $this;
+  }
+
   public function withDateCreatedBetween($min, $max) {
     $this->createdMin = $min;
     $this->createdMax = $max;
@@ -158,12 +164,24 @@
       }
     }
 
+    $object_types = $this->objectTypes;
+    if ($object_types) {
+      $object_types = array_fuse($object_types);
+    }
+
     $results = array();
     foreach ($queries as $query) {
+      $query_type = $query->getTemplateApplicationTransaction()
+        ->getApplicationTransactionType();
+
       if ($type_map) {
-        $type = $query->getTemplateApplicationTransaction()
-          ->getApplicationTransactionType();
-        if (!isset($type_map[$type])) {
+        if (!isset($type_map[$query_type])) {
+          continue;
+        }
+      }
+
+      if ($object_types) {
+        if (!isset($object_types[$query_type])) {
           continue;
         }
       }
diff --git a/src/applications/feed/query/PhabricatorFeedTransactionSearchEngine.php b/src/applications/feed/query/PhabricatorFeedTransactionSearchEngine.php
--- a/src/applications/feed/query/PhabricatorFeedTransactionSearchEngine.php
+++ b/src/applications/feed/query/PhabricatorFeedTransactionSearchEngine.php
@@ -21,6 +21,11 @@
         ->setLabel(pht('Authors'))
         ->setKey('authorPHIDs')
         ->setAliases(array('author', 'authors')),
+      id(new PhabricatorSearchDatasourceField())
+        ->setLabel(pht('Object Types'))
+        ->setKey('objectTypes')
+        ->setAliases(array('objectType'))
+        ->setDatasource(new PhabricatorTransactionsObjectTypeDatasource()),
       id(new PhabricatorSearchDateField())
         ->setLabel(pht('Created After'))
         ->setKey('createdStart'),
@@ -37,6 +42,10 @@
       $query->withAuthorPHIDs($map['authorPHIDs']);
     }
 
+    if ($map['objectTypes']) {
+      $query->withObjectTypes($map['objectTypes']);
+    }
+
     $created_min = $map['createdStart'];
     $created_max = $map['createdEnd'];
 
diff --git a/src/applications/transactions/typeahead/PhabricatorTransactionsObjectTypeDatasource.php b/src/applications/transactions/typeahead/PhabricatorTransactionsObjectTypeDatasource.php
new file mode 100644
--- /dev/null
+++ b/src/applications/transactions/typeahead/PhabricatorTransactionsObjectTypeDatasource.php
@@ -0,0 +1,63 @@
+<?php
+
+final class PhabricatorTransactionsObjectTypeDatasource
+  extends PhabricatorTypeaheadDatasource {
+
+  public function getBrowseTitle() {
+    return pht('Browse Forms');
+  }
+
+  public function getPlaceholderText() {
+    return pht('Type an object type name...');
+  }
+
+  public function getDatasourceApplicationClass() {
+    return 'PhabricatorTransactionsApplication';
+  }
+
+  protected function renderSpecialTokens(array $values) {
+    return $this->renderTokensFromResults($this->buildResults(), $values);
+  }
+
+  public function loadResults() {
+    $results = $this->buildResults();
+    return $this->filterResultsAgainstTokens($results);
+  }
+
+  private function buildResults() {
+    $queries = id(new PhutilClassMapQuery())
+      ->setAncestorClass('PhabricatorApplicationTransactionQuery')
+      ->execute();
+
+    $phid_types = PhabricatorPHIDType::getAllTypes();
+
+    $results = array();
+    foreach ($queries as $query) {
+      $query_type = $query->getTemplateApplicationTransaction()
+        ->getApplicationTransactionType();
+
+      $phid_type = idx($phid_types, $query_type);
+
+      if ($phid_type) {
+        $name = $phid_type->getTypeName();
+        $icon = $phid_type->getTypeIcon();
+      } else {
+        $name = pht('%s ("%s")', $query_type, get_class($query));
+        $icon = null;
+      }
+
+      $result = id(new PhabricatorTypeaheadResult())
+        ->setName($name)
+        ->setPHID($query_type);
+
+      if ($icon) {
+        $result->setIcon($icon);
+      }
+
+      $results[$query_type] = $result;
+    }
+
+    return $results;
+  }
+
+}