diff --git a/src/applications/diffusion/query/DiffusionCommitQuery.php b/src/applications/diffusion/query/DiffusionCommitQuery.php
--- a/src/applications/diffusion/query/DiffusionCommitQuery.php
+++ b/src/applications/diffusion/query/DiffusionCommitQuery.php
@@ -26,6 +26,7 @@
 
   private $needCommitData;
   private $needDrafts;
+  private $needIdentities;
 
   private $mustFilterRefs = false;
   private $refRepository;
@@ -110,6 +111,11 @@
     return $this;
   }
 
+  public function needIdentities($need) {
+    $this->needIdentities = $need;
+    return $this;
+  }
+
   public function needAuditRequests($need) {
     $this->needAuditRequests = $need;
     return $this;
@@ -393,6 +399,24 @@
       }
     }
 
+    if ($this->needIdentities) {
+      $identity_phids = array_merge(
+        mpull($commits, 'getAuthorIdentityPHID'),
+        mpull($commits, 'getCommitterIdentityPHID'));
+
+      $data = id(new PhabricatorRepositoryIdentityQuery())
+        ->withPHIDs($identity_phids)
+        ->setViewer($this->getViewer())
+        ->execute();
+      $data = mpull($data, null, 'getPHID');
+
+      foreach ($commits as $commit) {
+        $author_identity = idx($data, $commit->getAuthorIdentityPHID());
+        $committer_identity = idx($data, $commit->getCommitterIdentityPHID());
+        $commit->attachIdentities($author_identity, $committer_identity);
+      }
+    }
+
     if ($this->needDrafts) {
       PhabricatorDraftEngine::attachDrafts(
         $viewer,
diff --git a/src/applications/repository/phid/PhabricatorRepositoryIdentityPHIDType.php b/src/applications/repository/phid/PhabricatorRepositoryIdentityPHIDType.php
--- a/src/applications/repository/phid/PhabricatorRepositoryIdentityPHIDType.php
+++ b/src/applications/repository/phid/PhabricatorRepositoryIdentityPHIDType.php
@@ -28,6 +28,18 @@
   public function loadHandles(
     PhabricatorHandleQuery $query,
     array $handles,
-    array $objects) {}
+    array $objects) {
+
+    foreach ($handles as $phid => $handle) {
+      $identity = $objects[$phid];
+
+      $id = $identity->getID();
+      $name = $identity->getIdentityNameRaw();
+
+      $handle->setObjectName(pht('Identity %d', $id));
+      $handle->setName($name);
+      $handle->setURI($identity->getURI());
+    }
+  }
 
 }
diff --git a/src/applications/repository/query/PhabricatorRepositoryIdentityQuery.php b/src/applications/repository/query/PhabricatorRepositoryIdentityQuery.php
--- a/src/applications/repository/query/PhabricatorRepositoryIdentityQuery.php
+++ b/src/applications/repository/query/PhabricatorRepositoryIdentityQuery.php
@@ -131,8 +131,10 @@
       return $identities;
     }
 
-    $users = id(new PhabricatorUser())->loadAllWhere(
-      'phid IN (%Ls)', $user_ids);
+    $users = id(new PhabricatorPeopleQuery())
+      ->withPHIDs($user_ids)
+      ->setViewer($this->getViewer())
+      ->execute();
     $users = mpull($users, null, 'getPHID');
 
     foreach ($identities as $identity) {
diff --git a/src/applications/repository/storage/PhabricatorRepositoryCommit.php b/src/applications/repository/storage/PhabricatorRepositoryCommit.php
--- a/src/applications/repository/storage/PhabricatorRepositoryCommit.php
+++ b/src/applications/repository/storage/PhabricatorRepositoryCommit.php
@@ -44,6 +44,9 @@
   private $audits = self::ATTACHABLE;
   private $repository = self::ATTACHABLE;
   private $customFields = self::ATTACHABLE;
+  private $authorIdentity = self::ATTACHABLE;
+  private $committerIdentity = self::ATTACHABLE;
+
   private $drafts = array();
   private $auditAuthorityPHIDs = array();
 
@@ -191,6 +194,21 @@
     return ($this->audits !== self::ATTACHABLE);
   }
 
+  public function attachIdentities(
+    PhabricatorRepositoryIdentity $author,
+    $committer = null) {
+    $this->authorIdentity = $author;
+    $this->committerIdentity = $committer;
+  }
+
+  public function getAuthorIdentity() {
+    return $this->assertAttached($this->authorIdentity);
+  }
+
+  public function getCommiterIdentity() {
+    return $this->assertAttached($this->committerIdentity);
+  }
+
   public function loadAndAttachAuditAuthority(
     PhabricatorUser $viewer,
     $actor_phid = null) {
diff --git a/src/applications/repository/storage/PhabricatorRepositoryIdentity.php b/src/applications/repository/storage/PhabricatorRepositoryIdentity.php
--- a/src/applications/repository/storage/PhabricatorRepositoryIdentity.php
+++ b/src/applications/repository/storage/PhabricatorRepositoryIdentity.php
@@ -14,6 +14,17 @@
   protected $manuallySetUserPHID;
   protected $currentEffectiveUserPHID;
 
+  private $effectiveUser = self::ATTACHABLE;
+
+  public function attachEffectiveUser(PhabricatorUser $user) {
+    $this->effectiveUser = $user;
+    return $this;
+  }
+
+  public function getEffectiveUser() {
+    return $this->assertAttached($this->effectiveUser);
+  }
+
   protected function getConfiguration() {
     return array(
       self::CONFIG_AUX_PHID => true,
@@ -63,6 +74,10 @@
     return '/diffusion/identity/view/'.$this->getID().'/';
   }
 
+  public function hasEffectiveUser() {
+    return ($this->currentEffectiveUserPHID != null);
+  }
+
   public function save() {
     if ($this->manuallySetUserPHID) {
       $this->currentEffectiveUserPHID = $this->manuallySetUserPHID;