diff --git a/src/__phutil_library_map__.php b/src/__phutil_library_map__.php
index ede3deb000..5d8cf0c34d 100644
--- a/src/__phutil_library_map__.php
+++ b/src/__phutil_library_map__.php
@@ -906,7 +906,6 @@ phutil_register_library_map(array(
     'PhabricatorProjectProfileEditController' => 'applications/project/controller/PhabricatorProjectProfileEditController.php',
     'PhabricatorProjectQuery' => 'applications/project/query/PhabricatorProjectQuery.php',
     'PhabricatorProjectStatus' => 'applications/project/constants/PhabricatorProjectStatus.php',
-    'PhabricatorProjectSubproject' => 'applications/project/storage/PhabricatorProjectSubproject.php',
     'PhabricatorProjectTransaction' => 'applications/project/storage/PhabricatorProjectTransaction.php',
     'PhabricatorProjectTransactionType' => 'applications/project/constants/PhabricatorProjectTransactionType.php',
     'PhabricatorProjectUpdateController' => 'applications/project/controller/PhabricatorProjectUpdateController.php',
@@ -1941,7 +1940,6 @@ phutil_register_library_map(array(
     'PhabricatorProjectProfileController' => 'PhabricatorProjectController',
     'PhabricatorProjectProfileEditController' => 'PhabricatorProjectController',
     'PhabricatorProjectQuery' => 'PhabricatorOffsetPagedQuery',
-    'PhabricatorProjectSubproject' => 'PhabricatorProjectDAO',
     'PhabricatorProjectTransaction' => 'PhabricatorProjectDAO',
     'PhabricatorProjectTransactionType' => 'PhabricatorProjectConstants',
     'PhabricatorProjectUpdateController' => 'PhabricatorProjectController',
diff --git a/src/applications/project/controller/PhabricatorProjectProfileController.php b/src/applications/project/controller/PhabricatorProjectProfileController.php
index 9bdcd97a72..2a5ac7fab9 100644
--- a/src/applications/project/controller/PhabricatorProjectProfileController.php
+++ b/src/applications/project/controller/PhabricatorProjectProfileController.php
@@ -152,10 +152,7 @@ final class PhabricatorProjectProfileController
     $blurb = phutil_escape_html($blurb);
     $blurb = str_replace("\n", '<br />', $blurb);
 
-    $phids = array_merge(
-      array($project->getAuthorPHID()),
-      $project->getSubprojectPHIDs()
-    );
+    $phids = array($project->getAuthorPHID());
     $phids = array_unique($phids);
     $handles = id(new PhabricatorObjectHandleData($phids))
       ->loadHandles();
@@ -187,23 +184,6 @@ final class PhabricatorProjectProfileController
         </div>
       </div>';
 
-    if ($project->getSubprojectPHIDs()) {
-      $table = $this->renderSubprojectTable(
-        $handles,
-        $project->getSubprojectPHIDs());
-      $subproject_list = $table->render();
-    } else {
-      $subproject_list = '<p><em>No subprojects.</em></p>';
-    }
-
-    $about .=
-      '<div class="phabricator-profile-info-group">'.
-        '<h1 class="phabricator-profile-info-header">Subprojects</h1>'.
-        '<div class="phabricator-profile-info-pane">'.
-          $subproject_list.
-        '</div>'.
-      '</div>';
-
     return $about;
   }
 
@@ -327,39 +307,4 @@ final class PhabricatorProjectProfileController
     return $content;
   }
 
-  private function renderSubprojectTable(
-    array $handles,
-    array $subprojects_phids) {
-    assert_instances_of($handles, 'PhabricatorObjectHandle');
-
-    $rows = array();
-    foreach ($subprojects_phids as $subproject_phid) {
-      $phid = $handles[$subproject_phid]->getPHID();
-
-      $rows[] = array(
-        phutil_escape_html($handles[$phid]->getFullName()),
-        phutil_render_tag(
-          'a',
-          array(
-            'class' => 'small grey button',
-            'href' => $handles[$phid]->getURI(),
-          ),
-          'View Project Profile'),
-      );
-    }
-
-    $table = new AphrontTableView($rows);
-     $table->setHeaders(
-       array(
-         'Name',
-         '',
-       ));
-     $table->setColumnClasses(
-       array(
-         'pri',
-         'action right',
-       ));
-
-    return $table;
-  }
 }
diff --git a/src/applications/project/controller/PhabricatorProjectProfileEditController.php b/src/applications/project/controller/PhabricatorProjectProfileEditController.php
index b6e5e123b9..6495aa005a 100644
--- a/src/applications/project/controller/PhabricatorProjectProfileEditController.php
+++ b/src/applications/project/controller/PhabricatorProjectProfileEditController.php
@@ -39,15 +39,6 @@ final class PhabricatorProjectProfileEditController
 
     $img_src = $profile->loadProfileImageURI();
 
-    if ($project->getSubprojectPHIDs()) {
-      $phids = $project->getSubprojectPHIDs();
-      $handles = id(new PhabricatorObjectHandleData($phids))
-        ->loadHandles();
-      $subprojects = mpull($handles, 'getFullName', 'getPHID');
-    } else {
-      $subprojects = array();
-    }
-
     $options = PhabricatorProjectStatus::getStatusMap();
 
     $affiliations = $project->loadAffiliations();
@@ -84,7 +75,6 @@ final class PhabricatorProjectProfileEditController
         $errors[] = $ex->getMessage();
       }
 
-      $project->setSubprojectPHIDs($request->getArr('set_subprojects'));
       $profile->setBlurb($request->getStr('blurb'));
 
       if (!strlen($project->getName())) {
@@ -249,12 +239,6 @@ final class PhabricatorProjectProfileEditController
           ->setLabel('Blurb')
           ->setName('blurb')
           ->setValue($profile->getBlurb()))
-      ->appendChild(
-        id(new AphrontFormTokenizerControl())
-          ->setDatasource('/typeahead/common/projects/')
-          ->setLabel('Subprojects')
-          ->setName('set_subprojects')
-          ->setValue($subprojects))
       ->appendChild(
         id(new AphrontFormMarkupControl())
           ->setLabel('Profile Image')
diff --git a/src/applications/project/storage/PhabricatorProject.php b/src/applications/project/storage/PhabricatorProject.php
index 47a44ccc4b..92269a86a5 100644
--- a/src/applications/project/storage/PhabricatorProject.php
+++ b/src/applications/project/storage/PhabricatorProject.php
@@ -25,7 +25,6 @@ final class PhabricatorProject extends PhabricatorProjectDAO {
   protected $subprojectPHIDs = array();
   protected $phrictionSlug;
 
-  private $subprojectsNeedUpdate;
   private $affiliations;
 
   public function getConfiguration() {
@@ -42,12 +41,6 @@ final class PhabricatorProject extends PhabricatorProjectDAO {
       PhabricatorPHIDConstants::PHID_TYPE_PROJ);
   }
 
-  public function setSubprojectPHIDs(array $phids) {
-    $this->subprojectPHIDs = $phids;
-    $this->subprojectsNeedUpdate = true;
-    return $this;
-  }
-
   public function loadProfile() {
     $profile = id(new PhabricatorProjectProfile())->loadOneWhere(
       'projectPHID = %s',
@@ -95,17 +88,4 @@ final class PhabricatorProject extends PhabricatorProjectDAO {
     return $this;
   }
 
-  public function save() {
-    $result = parent::save();
-
-    if ($this->subprojectsNeedUpdate) {
-      // If we've changed the project PHIDs for this task, update the link
-      // table.
-      PhabricatorProjectSubproject::updateProjectSubproject($this);
-      $this->subprojectsNeedUpdate = false;
-    }
-
-    return $result;
-  }
-
 }
diff --git a/src/applications/project/storage/PhabricatorProjectSubproject.php b/src/applications/project/storage/PhabricatorProjectSubproject.php
deleted file mode 100644
index 2f0c62a9db..0000000000
--- a/src/applications/project/storage/PhabricatorProjectSubproject.php
+++ /dev/null
@@ -1,66 +0,0 @@
-<?php
-
-/*
- * Copyright 2011 Facebook, Inc.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *   http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-/**
- * This is a DAO for the Project -> subproject table, which
- * denormalizes the relationship between projects and subprojects into
- * a link table so it can be efficiently queried. This table is not
- * authoritative; the subprojectPHIDs field of PhabricatorProject is.
- * The rows in this table are regenerated when subprojects of a project
- * are updated.
- */
-final class PhabricatorProjectSubproject extends PhabricatorProjectDAO {
-
-  protected $projectPHID;
-  protected $subprojectPHID;
-
-  public function getConfiguration() {
-    return array(
-      self::CONFIG_IDS          => self::IDS_MANUAL,
-      self::CONFIG_TIMESTAMPS   => false,
-    );
-  }
-
-  public static function updateProjectSubproject(PhabricatorProject $project) {
-    $dao = new PhabricatorProjectSubproject();
-    $conn = $dao->establishConnection('w');
-
-    $sql = array();
-    foreach ($project->getSubprojectPHIDs() as $subproject_phid) {
-      $sql[] = qsprintf(
-        $conn,
-        '(%s, %s)',
-        $project->getPHID(),
-        $subproject_phid);
-    }
-
-    queryfx(
-      $conn,
-      'DELETE FROM %T WHERE projectPHID = %s',
-      $dao->getTableName(),
-      $project->getPHID());
-    if ($sql) {
-      queryfx(
-        $conn,
-        'INSERT INTO %T (projectPHID, subprojectPHID) VALUES %Q',
-        $dao->getTableName(),
-        implode(', ', $sql));
-    }
-  }
-
-}