Now You can create the Facebook like button in any language you want
For Using the iframe version of the button you have to insert the code snippet “& amp;locale=en_US” (for English) somewhere after the facebook like button link, so the code would look like this:

<iframe
src='&quot;http://www.facebook.com/plugins/like.php?
href&quot; + data:post.url + &amp;locale=en_US&amp;send=false
&amp;layout=button_count&amp;width=100&amp;show_faces=true
&amp;action=like&amp;colorscheme=light&amp;font&amp;height=21"
scrolling="no" frameborder="0" style="border:none; overflow:hidden;
width:100px; height:21px;" allowTransparency="true"></iframe>

&locale=ta_IN

Facebook like button language code