<link href="//netdna.bootstrapcdn.com/bootstrap/3.1.0/css/bootstrap.min.css" rel="stylesheet" id="bootstrap-css">
<script src="//netdna.bootstrapcdn.com/bootstrap/3.1.0/js/bootstrap.min.js"></script>
<script src="//code.jquery.com/jquery-1.11.1.min.js"></script>
<div class="container">
Credit: <a href="http://www.devlifeline.com/2013/09/multi-column-bootstrap-dropdown.html">Source</a>
<div class="row">
<ul class="nav">
<li class="dropdown">
<a href="#" data-toggle="dropdown">Dropdown Heading</a>
<div class="dropdown-menu multi-column">
<div class="container-fluid">
<div class="row-fluid">
<div class="span6">
<ul class="dropdown-menu">
<li><a href="#">Col 1 - Opt 1</a></li>
<li><a href="#">Col 1 - Opt 2</a></li>
</ul>
</div>
<div class="span6">
<ul class="dropdown-menu">
<li><a href="#">Col 2 - Opt 1</a></li>
<li><a href="#">Col 2 - Opt 2</a></li>
</ul>
</div>
</div>
</div>
</div>
</li>
</ul>
</div>
</div>
