<p><a href=“http://www.ama-assn.org/ama/pub/category/2375.html[/url]”>http://www.ama-assn.org/ama/pub/category/2375.html</a> has a list of the most common specialties.
<a href=“http://www.aamc.org/students/cim/specialties.htm[/url]”>http://www.aamc.org/students/cim/specialties.htm</a> has some that aren’t listed on the previous site.
<a href=“http://www.google.com/Top/Health/Medicine/Medical_Specialties/[/url]”>http://www.google.com/Top/Health/Medicine/Medical_Specialties/</a> has even more.</p>
<p>There are also various sub-specialties within each of the specialties listed. (And there’s probably more specialties that aren’t listed on any of the sites)</p>