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
@@ -3204,6 +3204,7 @@
     'PhabricatorOwnersDefaultViewCapability' => 'applications/owners/capability/PhabricatorOwnersDefaultViewCapability.php',
     'PhabricatorOwnersDetailController' => 'applications/owners/controller/PhabricatorOwnersDetailController.php',
     'PhabricatorOwnersEditController' => 'applications/owners/controller/PhabricatorOwnersEditController.php',
+    'PhabricatorOwnersHovercardEngineExtension' => 'applications/owners/engineextension/PhabricatorOwnersHovercardEngineExtension.php',
     'PhabricatorOwnersListController' => 'applications/owners/controller/PhabricatorOwnersListController.php',
     'PhabricatorOwnersOwner' => 'applications/owners/storage/PhabricatorOwnersOwner.php',
     'PhabricatorOwnersPackage' => 'applications/owners/storage/PhabricatorOwnersPackage.php',
@@ -8406,6 +8407,7 @@
     'PhabricatorOwnersDefaultViewCapability' => 'PhabricatorPolicyCapability',
     'PhabricatorOwnersDetailController' => 'PhabricatorOwnersController',
     'PhabricatorOwnersEditController' => 'PhabricatorOwnersController',
+    'PhabricatorOwnersHovercardEngineExtension' => 'PhabricatorHovercardEngineExtension',
     'PhabricatorOwnersListController' => 'PhabricatorOwnersController',
     'PhabricatorOwnersOwner' => 'PhabricatorOwnersDAO',
     'PhabricatorOwnersPackage' => array(
diff --git a/src/applications/owners/engineextension/PhabricatorOwnersHovercardEngineExtension.php b/src/applications/owners/engineextension/PhabricatorOwnersHovercardEngineExtension.php
new file mode 100644
--- /dev/null
+++ b/src/applications/owners/engineextension/PhabricatorOwnersHovercardEngineExtension.php
@@ -0,0 +1,89 @@
+<?php
+
+final class PhabricatorOwnersHovercardEngineExtension
+  extends PhabricatorHovercardEngineExtension {
+
+  const EXTENSIONKEY = 'owners';
+
+  public function isExtensionEnabled() {
+    return PhabricatorApplication::isClassInstalled(
+      'PhabricatorOwnersApplication');
+  }
+
+  public function getExtensionName() {
+    return pht('Owner Packages');
+  }
+
+  public function canRenderObjectHovercard($object) {
+    return ($object instanceof PhabricatorOwnersPackage);
+  }
+
+  public function willRenderHovercards(array $objects) {
+    $viewer = $this->getViewer();
+    $phids = mpull($objects, 'getPHID');
+
+    $packages = id(new PhabricatorOwnersPackageQuery())
+      ->setViewer($viewer)
+      ->withPHIDs($phids)
+      ->execute();
+    $packages = mpull($packages, null, 'getPHID');
+
+    return array(
+      'packages' => $packages,
+    );
+  }
+
+  public function renderHovercard(
+    PHUIHovercardView $hovercard,
+    PhabricatorObjectHandle $handle,
+    $object,
+    $data) {
+
+    $viewer = $this->getViewer();
+
+    $package = idx($data['packages'], $object->getPHID());
+    if (!$package) {
+      return;
+    }
+
+    $title = pht('%s: %s', 'O'.$package->getID(), $package->getName());
+    $hovercard->setTitle($title);
+
+    $dominion = $package->getDominion();
+    $dominion_map = PhabricatorOwnersPackage::getDominionOptionsMap();
+    $spec = idx($dominion_map, $dominion, array());
+    $name = idx($spec, 'short', $dominion);
+    $hovercard->addField(pht('Dominion'), $name);
+
+    $auto = $package->getAutoReview();
+    $autoreview_map = PhabricatorOwnersPackage::getAutoreviewOptionsMap();
+    $spec = idx($autoreview_map, $auto, array());
+    $name = idx($spec, 'name', $auto);
+    $hovercard->addField(pht('Auto Review'), $name);
+
+    if ($package->isArchived()) {
+      $tag = id(new PHUITagView())
+        ->setName(pht('Archived'))
+        ->setShade(PHUITagView::COLOR_INDIGO)
+        ->setType(PHUITagView::TYPE_OBJECT);
+      $hovercard->addTag($tag);
+    }
+
+    $owner_phids = $package->getOwnerPHIDs();
+
+    $hovercard->addField(
+      pht('Owners'),
+      $viewer->renderHandleList($owner_phids)->setAsInline(true));
+
+    $description = $package->getDescription();
+    if (strlen($description)) {
+      $description = id(new PhutilUTF8StringTruncator())
+        ->setMaximumGlyphs(120)
+        ->truncateString($description);
+
+      $hovercard->addField(pht('Description'), $description);
+    }
+
+  }
+
+}
diff --git a/src/view/phui/PHUIHovercardView.php b/src/view/phui/PHUIHovercardView.php
--- a/src/view/phui/PHUIHovercardView.php
+++ b/src/view/phui/PHUIHovercardView.php
@@ -112,14 +112,17 @@
 
     $body = array();
 
+    $body_title = null;
     if ($this->detail) {
       $body_title = $this->detail;
-    } else {
+    } else if (!$this->fields) {
       // Fallback for object handles
       $body_title = $handle->getFullName();
     }
 
-    $body[] = phutil_tag_div('phui-hovercard-body-header', $body_title);
+    if ($body_title) {
+      $body[] = phutil_tag_div('phui-hovercard-body-header', $body_title);
+    }
 
     foreach ($this->fields as $field) {
       $item = array(