diff --git a/src/applications/daemon/management/PhabricatorDaemonManagementRestartWorkflow.php b/src/applications/daemon/management/PhabricatorDaemonManagementRestartWorkflow.php
--- a/src/applications/daemon/management/PhabricatorDaemonManagementRestartWorkflow.php
+++ b/src/applications/daemon/management/PhabricatorDaemonManagementRestartWorkflow.php
@@ -19,12 +19,19 @@
               'seconds. Defaults to __15__ seconds.'),
             'default' => 15,
           ),
+          array(
+            'name' => 'force',
+            'help' => pht(
+              'Also stop running processes that look like daemons but do '.
+              'not have corresponding PID files.'),
+          ),
         ));
   }
 
   public function execute(PhutilArgumentParser $args) {
     $graceful = $args->getArg('graceful');
-    $err = $this->executeStopCommand(array(), $graceful);
+    $force = $args->getArg('force');
+    $err = $this->executeStopCommand(array(), $graceful, $force);
     if ($err) {
       return $err;
     }
diff --git a/src/applications/daemon/management/PhabricatorDaemonManagementStopWorkflow.php b/src/applications/daemon/management/PhabricatorDaemonManagementStopWorkflow.php
--- a/src/applications/daemon/management/PhabricatorDaemonManagementStopWorkflow.php
+++ b/src/applications/daemon/management/PhabricatorDaemonManagementStopWorkflow.php
@@ -21,6 +21,12 @@
             'default' => 15,
           ),
           array(
+            'name' => 'force',
+            'help' => pht(
+              'Also stop running processes that look like daemons but do '.
+              'not have corresponding PID files.'),
+          ),
+          array(
             'name' => 'pids',
             'wildcard' => true,
           ),
@@ -30,7 +36,8 @@
   public function execute(PhutilArgumentParser $args) {
     $pids = $args->getArg('pids');
     $graceful = $args->getArg('graceful');
-    return $this->executeStopCommand($pids, $graceful);
+    $force = $args->getArg('force');
+    return $this->executeStopCommand($pids, $graceful, $force);
   }
 
 }
diff --git a/src/applications/daemon/management/PhabricatorDaemonManagementWorkflow.php b/src/applications/daemon/management/PhabricatorDaemonManagementWorkflow.php
--- a/src/applications/daemon/management/PhabricatorDaemonManagementWorkflow.php
+++ b/src/applications/daemon/management/PhabricatorDaemonManagementWorkflow.php
@@ -286,15 +286,39 @@
     return 0;
   }
 
-  protected final function executeStopCommand(array $pids, $grace_period) {
+  protected final function executeStopCommand(
+    array $pids,
+    $grace_period,
+    $force) {
+
     $console = PhutilConsole::getConsole();
 
     $daemons = $this->loadRunningDaemons();
+    $rogue_daemons = PhutilDaemonOverseer::findRunningDaemons();
     if (!$daemons) {
-      $console->writeErr(pht('There are no running Phabricator daemons.')."\n");
+      if ($force && $rogue_daemons) {
+        $stop_rogue_daemons = $this->buildRogueDaemons($rogue_daemons);
+        $this->sendStopSignals($stop_rogue_daemons, $grace_period);
+      } else {
+        $console->writeErr(pht(
+          'There are no running Phabricator daemons.')."\n");
+        if ($rogue_daemons) {
+          $console->writeErr($this->getForceStopHint($rogue_daemons)."\n");
+        }
+      }
       return 0;
     }
 
+    if ($rogue_daemons) {
+      if ($force) {
+        $daemons = array_merge(
+          $daemons,
+          $this->buildRogueDaemons($rogue_daemons));
+      } else {
+        $console->writeErr($this->getForceStopHint($rogue_daemons)."\n");
+      }
+    }
+
     $daemons = mpull($daemons, null, 'getPID');
 
     $running = array();
@@ -325,29 +349,50 @@
     }
 
     $all_daemons = $running;
+    $this->sendStopSignals($running, $grace_period);
+
+    foreach ($all_daemons as $daemon) {
+      if ($daemon->getPIDFile()) {
+        Filesystem::remove($daemon->getPIDFile());
+      }
+    }
+
+    return 0;
+  }
+
+  private function getForceStopHint($rogue_daemons) {
+    return pht(
+      'There are processes running that look like Phabricator daemons but '.
+      'have no corresponding PID files:'."\n\n".'%s'."\n\n".
+      'Stop these processes by re-running this command with the --force '.
+      'parameter.',
+      implode("\n", ipull($rogue_daemons, 'command')));
+  }
 
+  private function buildRogueDaemons(array $daemons) {
+    $rogue_daemons = array();
+    foreach ($daemons as $pid => $data) {
+      $rogue_daemons[] =
+        PhabricatorDaemonReference::newFromRogueDictionary($data);
+    }
+    return $rogue_daemons;
+  }
+
+  private function sendStopSignals($daemons, $grace_period) {
     // If we're doing a graceful shutdown, try SIGINT first.
     if ($grace_period) {
-      $running = $this->sendSignal($running, SIGINT, $grace_period);
+      $daemons = $this->sendSignal($daemons, SIGINT, $grace_period);
     }
 
     // If we still have daemons, SIGTERM them.
-    if ($running) {
-      $running = $this->sendSignal($running, SIGTERM, 15);
+    if ($daemons) {
+      $daemons = $this->sendSignal($daemons, SIGTERM, 15);
     }
 
     // If the overseer is still alive, SIGKILL it.
-    if ($running) {
-      $this->sendSignal($running, SIGKILL, 0);
+    if ($daemons) {
+      $this->sendSignal($daemons, SIGKILL, 0);
     }
-
-    foreach ($all_daemons as $daemon) {
-      if ($daemon->getPIDFile()) {
-        Filesystem::remove($daemon->getPIDFile());
-      }
-    }
-
-    return 0;
   }
 
   private function sendSignal(array $daemons, $signo, $wait) {
diff --git a/src/infrastructure/daemon/control/PhabricatorDaemonReference.php b/src/infrastructure/daemon/control/PhabricatorDaemonReference.php
--- a/src/infrastructure/daemon/control/PhabricatorDaemonReference.php
+++ b/src/infrastructure/daemon/control/PhabricatorDaemonReference.php
@@ -41,6 +41,21 @@
     return $ref;
   }
 
+  /**
+   * Appropriate for getting @{class:PhabricatorDaemonReference} objects from
+   * the data from @{class:PhabricatorDaemonManagementWorkflow}'s method
+   * @{method:findRunningDaemons}.
+   *
+   * NOTE: the objects are not fully featured and should be used with caution.
+   */
+  public static function newFromRogueDictionary(array $dict) {
+    $ref = new PhabricatorDaemonReference();
+    $ref->name = pht('Rogue %s', idx($dict, 'type'));
+    $ref->pid = idx($dict, 'pid');
+
+    return $ref;
+  }
+
   public function updateStatus($new_status) {
     try {
       if (!$this->daemonLog) {