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
@@ -4562,6 +4562,7 @@
     'PhabricatorUserCustomFieldNumericIndex' => 'applications/people/storage/PhabricatorUserCustomFieldNumericIndex.php',
     'PhabricatorUserCustomFieldStringIndex' => 'applications/people/storage/PhabricatorUserCustomFieldStringIndex.php',
     'PhabricatorUserDAO' => 'applications/people/storage/PhabricatorUserDAO.php',
+    'PhabricatorUserEditEngine' => 'applications/people/editor/PhabricatorUserEditEngine.php',
     'PhabricatorUserEditor' => 'applications/people/editor/PhabricatorUserEditor.php',
     'PhabricatorUserEditorTestCase' => 'applications/people/editor/__tests__/PhabricatorUserEditorTestCase.php',
     'PhabricatorUserEmail' => 'applications/people/storage/PhabricatorUserEmail.php',
@@ -5233,6 +5234,7 @@
     'TransactionSearchConduitAPIMethod' => 'applications/transactions/conduit/TransactionSearchConduitAPIMethod.php',
     'UserConduitAPIMethod' => 'applications/people/conduit/UserConduitAPIMethod.php',
     'UserDisableConduitAPIMethod' => 'applications/people/conduit/UserDisableConduitAPIMethod.php',
+    'UserEditConduitAPIMethod' => 'applications/people/conduit/UserEditConduitAPIMethod.php',
     'UserEnableConduitAPIMethod' => 'applications/people/conduit/UserEnableConduitAPIMethod.php',
     'UserFindConduitAPIMethod' => 'applications/people/conduit/UserFindConduitAPIMethod.php',
     'UserQueryConduitAPIMethod' => 'applications/people/conduit/UserQueryConduitAPIMethod.php',
@@ -10547,6 +10549,7 @@
     'PhabricatorUserCustomFieldNumericIndex' => 'PhabricatorCustomFieldNumericIndexStorage',
     'PhabricatorUserCustomFieldStringIndex' => 'PhabricatorCustomFieldStringIndexStorage',
     'PhabricatorUserDAO' => 'PhabricatorLiskDAO',
+    'PhabricatorUserEditEngine' => 'PhabricatorEditEngine',
     'PhabricatorUserEditor' => 'PhabricatorEditor',
     'PhabricatorUserEditorTestCase' => 'PhabricatorTestCase',
     'PhabricatorUserEmail' => 'PhabricatorUserDAO',
@@ -11388,6 +11391,7 @@
     'TransactionSearchConduitAPIMethod' => 'ConduitAPIMethod',
     'UserConduitAPIMethod' => 'ConduitAPIMethod',
     'UserDisableConduitAPIMethod' => 'UserConduitAPIMethod',
+    'UserEditConduitAPIMethod' => 'PhabricatorEditEngineAPIMethod',
     'UserEnableConduitAPIMethod' => 'UserConduitAPIMethod',
     'UserFindConduitAPIMethod' => 'UserConduitAPIMethod',
     'UserQueryConduitAPIMethod' => 'UserConduitAPIMethod',
diff --git a/src/applications/people/conduit/UserEditConduitAPIMethod.php b/src/applications/people/conduit/UserEditConduitAPIMethod.php
new file mode 100644
--- /dev/null
+++ b/src/applications/people/conduit/UserEditConduitAPIMethod.php
@@ -0,0 +1,20 @@
+<?php
+
+final class UserEditConduitAPIMethod
+  extends PhabricatorEditEngineAPIMethod {
+
+  public function getAPIMethodName() {
+    return 'user.edit';
+  }
+
+  public function newEditEngine() {
+    return new PhabricatorUserEditEngine();
+  }
+
+  public function getMethodSummary() {
+    return pht(
+      'Apply transactions to edit a user. (Users can not be created via '.
+      'the API.)');
+  }
+
+}
diff --git a/src/applications/people/customfield/PhabricatorUserBlurbField.php b/src/applications/people/customfield/PhabricatorUserBlurbField.php
--- a/src/applications/people/customfield/PhabricatorUserBlurbField.php
+++ b/src/applications/people/customfield/PhabricatorUserBlurbField.php
@@ -9,6 +9,14 @@
     return 'user:blurb';
   }
 
+  public function getModernFieldKey() {
+    return 'blurb';
+  }
+
+  public function getFieldKeyForConduit() {
+    return $this->getModernFieldKey();
+  }
+
   public function getFieldName() {
     return pht('Blurb');
   }
@@ -50,6 +58,11 @@
     $this->value = $request->getStr($this->getFieldKey());
   }
 
+  public function setValueFromStorage($value) {
+    $this->value = $value;
+    return $this;
+  }
+
   public function renderEditControl(array $handles) {
     return id(new PhabricatorRemarkupControl())
       ->setUser($this->getViewer())
@@ -85,4 +98,12 @@
     return 'block';
   }
 
+  public function shouldAppearInConduitTransactions() {
+    return true;
+  }
+
+  protected function newConduitEditParameterType() {
+    return new ConduitStringParameterType();
+  }
+
 }
diff --git a/src/applications/people/customfield/PhabricatorUserIconField.php b/src/applications/people/customfield/PhabricatorUserIconField.php
--- a/src/applications/people/customfield/PhabricatorUserIconField.php
+++ b/src/applications/people/customfield/PhabricatorUserIconField.php
@@ -9,6 +9,14 @@
     return 'user:icon';
   }
 
+  public function getModernFieldKey() {
+    return 'icon';
+  }
+
+  public function getFieldKeyForConduit() {
+    return $this->getModernFieldKey();
+  }
+
   public function getFieldName() {
     return pht('Icon');
   }
@@ -50,6 +58,11 @@
     $this->value = $request->getStr($this->getFieldKey());
   }
 
+  public function setValueFromStorage($value) {
+    $this->value = $value;
+    return $this;
+  }
+
   public function renderEditControl(array $handles) {
     return id(new PHUIFormIconSetControl())
       ->setName($this->getFieldKey())
@@ -58,4 +71,12 @@
       ->setIconSet(new PhabricatorPeopleIconSet());
   }
 
+  public function shouldAppearInConduitTransactions() {
+    return true;
+  }
+
+  protected function newConduitEditParameterType() {
+    return new ConduitStringParameterType();
+  }
+
 }
diff --git a/src/applications/people/customfield/PhabricatorUserRealNameField.php b/src/applications/people/customfield/PhabricatorUserRealNameField.php
--- a/src/applications/people/customfield/PhabricatorUserRealNameField.php
+++ b/src/applications/people/customfield/PhabricatorUserRealNameField.php
@@ -9,6 +9,14 @@
     return 'user:realname';
   }
 
+  public function getModernFieldKey() {
+    return 'realName';
+  }
+
+  public function getFieldKeyForConduit() {
+    return $this->getModernFieldKey();
+  }
+
   public function getFieldName() {
     return pht('Real Name');
   }
@@ -53,6 +61,11 @@
     $this->value = $request->getStr($this->getFieldKey());
   }
 
+  public function setValueFromStorage($value) {
+    $this->value = $value;
+    return $this;
+  }
+
   public function renderEditControl(array $handles) {
     return id(new AphrontFormTextControl())
       ->setName($this->getFieldKey())
@@ -65,4 +78,12 @@
     return PhabricatorEnv::getEnvConfig('account.editable');
   }
 
+  public function shouldAppearInConduitTransactions() {
+    return true;
+  }
+
+  protected function newConduitEditParameterType() {
+    return new ConduitStringParameterType();
+  }
+
 }
diff --git a/src/applications/people/customfield/PhabricatorUserTitleField.php b/src/applications/people/customfield/PhabricatorUserTitleField.php
--- a/src/applications/people/customfield/PhabricatorUserTitleField.php
+++ b/src/applications/people/customfield/PhabricatorUserTitleField.php
@@ -9,6 +9,14 @@
     return 'user:title';
   }
 
+  public function getModernFieldKey() {
+    return 'title';
+  }
+
+  public function getFieldKeyForConduit() {
+    return $this->getModernFieldKey();
+  }
+
   public function getFieldName() {
     return pht('Title');
   }
@@ -50,6 +58,11 @@
     $this->value = $request->getStr($this->getFieldKey());
   }
 
+  public function setValueFromStorage($value) {
+    $this->value = $value;
+    return $this;
+  }
+
   public function renderEditControl(array $handles) {
     return id(new AphrontFormTextControl())
       ->setName($this->getFieldKey())
@@ -57,4 +70,12 @@
       ->setLabel($this->getFieldName());
   }
 
+  public function shouldAppearInConduitTransactions() {
+    return true;
+  }
+
+  protected function newConduitEditParameterType() {
+    return new ConduitStringParameterType();
+  }
+
 }
diff --git a/src/applications/people/editor/PhabricatorUserEditEngine.php b/src/applications/people/editor/PhabricatorUserEditEngine.php
new file mode 100644
--- /dev/null
+++ b/src/applications/people/editor/PhabricatorUserEditEngine.php
@@ -0,0 +1,70 @@
+<?php
+
+final class PhabricatorUserEditEngine
+  extends PhabricatorEditEngine {
+
+  const ENGINECONST = 'people.user';
+
+  public function isEngineConfigurable() {
+    return false;
+  }
+
+  public function getEngineName() {
+    return pht('Users');
+  }
+
+  public function getSummaryHeader() {
+    return pht('Configure User Forms');
+  }
+
+  public function getSummaryText() {
+    return pht('Configure creation and editing forms for users.');
+  }
+
+  public function getEngineApplicationClass() {
+    return 'PhabricatorPeopleApplication';
+  }
+
+  protected function newEditableObject() {
+    return new PhabricatorUser();
+  }
+
+  protected function newObjectQuery() {
+    return id(new PhabricatorPeopleQuery());
+  }
+
+  protected function getObjectCreateTitleText($object) {
+    return pht('Create New User');
+  }
+
+  protected function getObjectEditTitleText($object) {
+    return pht('Edit User: %s', $object->getUsername());
+  }
+
+  protected function getObjectEditShortText($object) {
+    return $object->getMonogram();
+  }
+
+  protected function getObjectCreateShortText() {
+    return pht('Create User');
+  }
+
+  protected function getObjectName() {
+    return pht('User');
+  }
+
+  protected function getObjectViewURI($object) {
+    return $object->getURI();
+  }
+
+  protected function getCreateNewObjectPolicy() {
+    // At least for now, forbid creating new users via EditEngine. This is
+    // primarily enforcing that "user.edit" can not create users via the API.
+    return PhabricatorPolicies::POLICY_NOONE;
+  }
+
+  protected function buildCustomEditFields($object) {
+    return array();
+  }
+
+}