Index: wp-login.php
===================================================================
--- wp-login.php	(revision 22318)
+++ wp-login.php	(working copy)
@@ -544,7 +544,7 @@
 	login_header(__('Registration Form'), '<p class="message register">' . __('Register For This Site') . '</p>', $errors);
 ?>
 
-<form name="registerform" id="registerform" action="<?php echo esc_url( site_url('wp-login.php?action=register', 'login_post') ); ?>" method="post">
+<form name="registerform" id="registerform" action="<?php echo esc_url( site_url('wp-login.php?action=register', 'login_post') ); ?>" method="post" novalidate>
 	<p>
 		<label for="user_login"><?php _e('Username') ?><br />
 		<input type="text" name="user_login" id="user_login" class="input" value="<?php echo esc_attr(stripslashes($user_login)); ?>" size="20" /></label>
Index: wp-admin/includes/template.php
===================================================================
--- wp-admin/includes/template.php	(revision 22318)
+++ wp-admin/includes/template.php	(working copy)
@@ -321,7 +321,7 @@
 	}
 
 ?>
-<form method="get" action="">
+<form method="get" action="" novalidate>
 <?php if ( $table_row ) : ?>
 <table style="display:none;"><tbody id="com-reply"><tr id="replyrow" style="display:none;"><td colspan="<?php echo $wp_list_table->get_column_count(); ?>" class="colspanchange">
 <?php else : ?>
@@ -337,7 +337,7 @@
 
 		<div class="inside">
 		<label for="author-email"><?php _e('E-mail') ?></label>
-		<input type="text" name="newcomment_author_email" size="50" value="" id="author-email" />
+		<input type="email" name="newcomment_author_email" size="50" value="" id="author-email" />
 		</div>
 
 		<div class="inside">
Index: wp-admin/options-general.php
===================================================================
--- wp-admin/options-general.php	(revision 22318)
+++ wp-admin/options-general.php	(working copy)
@@ -87,7 +87,7 @@
 <?php screen_icon(); ?>
 <h2><?php echo esc_html( $title ); ?></h2>
 
-<form method="post" action="options.php">
+<form method="post" action="options.php" novalidate>
 <?php settings_fields('general'); ?>
 
 <table class="form-table">
@@ -112,7 +112,7 @@
 </tr>
 <tr valign="top">
 <th scope="row"><label for="admin_email"><?php _e('E-mail Address') ?> </label></th>
-<td><input name="admin_email" type="text" id="admin_email" value="<?php form_option('admin_email'); ?>" class="regular-text ltr" />
+<td><input name="admin_email" type="email" id="admin_email" value="<?php form_option('admin_email'); ?>" class="regular-text ltr" />
 <p class="description"><?php _e('This address is used for admin purposes, like new user notification.') ?></p></td>
 </tr>
 <tr valign="top">
@@ -131,7 +131,7 @@
 <?php } else { ?>
 <tr valign="top">
 <th scope="row"><label for="new_admin_email"><?php _e('E-mail Address') ?> </label></th>
-<td><input name="new_admin_email" type="text" id="new_admin_email" value="<?php form_option('admin_email'); ?>" class="regular-text ltr" />
+<td><input name="new_admin_email" type="email" id="new_admin_email" value="<?php form_option('admin_email'); ?>" class="regular-text ltr" />
 <p class="description"><?php _e('This address is used for admin purposes. If you change this we will send you an e-mail at your new address to confirm it. <strong>The new address will not become active until confirmed.</strong>') ?></p>
 <?php
 $new_admin_email = get_option( 'new_admin_email' );
Index: wp-admin/edit-form-comment.php
===================================================================
--- wp-admin/edit-form-comment.php	(revision 22318)
+++ wp-admin/edit-form-comment.php	(working copy)
@@ -10,7 +10,7 @@
 if ( !defined('ABSPATH') )
 	die('-1');
 ?>
-<form name="post" action="comment.php" method="post" id="post">
+<form name="post" action="comment.php" method="post" id="post" novalidate>
 <?php wp_nonce_field('update-comment_' . $comment->comment_ID) ?>
 <div class="wrap">
 <?php screen_icon(); ?>
@@ -42,7 +42,7 @@
 			_e( 'E-mail:' );
 		}
 ?></td>
-	<td><input type="text" name="newcomment_author_email" size="30" value="<?php echo $comment->comment_author_email; ?>" id="email" /></td>
+	<td><input type="email" name="newcomment_author_email" size="30" value="<?php echo $comment->comment_author_email; ?>" id="email" /></td>
 </tr>
 <tr valign="top">
 	<td class="first">
Index: wp-admin/network/site-users.php
===================================================================
--- wp-admin/network/site-users.php	(revision 22318)
+++ wp-admin/network/site-users.php	(working copy)
@@ -276,7 +276,7 @@
 
 <?php if ( current_user_can( 'create_users' ) && apply_filters( 'show_network_site_users_add_new_form', true ) ) : ?>
 <h3 id="add-new-user"><?php _e( 'Add New User' ); ?></h3>
-<form action="<?php echo network_admin_url('site-users.php?action=newuser'); ?>" id="newuser" method="post">
+<form action="<?php echo network_admin_url('site-users.php?action=newuser'); ?>" id="newuser" method="post" novalidate>
 	<input type="hidden" name="id" value="<?php echo esc_attr( $id ) ?>" />
 	<table class="form-table">
 		<tr>
@@ -285,7 +285,7 @@
 		</tr>
 		<tr>
 			<th scope="row"><?php _e( 'Email' ) ?></th>
-			<td><input type="text" class="regular-text" name="user[email]" /></td>
+			<td><input type="email" class="regular-text" name="user[email]" /></td>
 		</tr>
 		<tr>
 			<th scope="row"><?php _e( 'Role' ); ?></th>
Index: wp-admin/user-edit.php
===================================================================
--- wp-admin/user-edit.php	(revision 22318)
+++ wp-admin/user-edit.php	(working copy)
@@ -189,7 +189,7 @@
 } ?>
 </h2>
 
-<form id="your-profile" action="<?php echo esc_url( self_admin_url( IS_PROFILE_PAGE ? 'profile.php' : 'user-edit.php' ) ); ?>" method="post"<?php do_action('user_edit_form_tag'); ?>>
+<form id="your-profile" action="<?php echo esc_url( self_admin_url( IS_PROFILE_PAGE ? 'profile.php' : 'user-edit.php' ) ); ?>" method="post"<?php do_action('user_edit_form_tag'); ?> novalidate>
 <?php wp_nonce_field('update-user_' . $user_id) ?>
 <?php if ( $wp_http_referer ) : ?>
 	<input type="hidden" name="wp_http_referer" value="<?php echo esc_url($wp_http_referer); ?>" />
@@ -334,7 +334,7 @@
 <table class="form-table">
 <tr>
 	<th><label for="email"><?php _e('E-mail'); ?> <span class="description"><?php _e('(required)'); ?></span></label></th>
-	<td><input type="text" name="email" id="email" value="<?php echo esc_attr($profileuser->user_email) ?>" class="regular-text" />
+	<td><input type="email" name="email" id="email" value="<?php echo esc_attr($profileuser->user_email) ?>" class="regular-text" />
 	<?php
 	$new_email = get_option( $current_user->ID . '_new_email' );
 	if ( $new_email && $new_email != $current_user->user_email ) : ?>