UF alumnus:
http://www.guypeterson.com/

Are you looking for something specific? I'm just north of Sarasota in St. Peterburg and might be able to point you in the right direction with some more information.

Here's a few off the top of my head...

Seibert Architects
Halflants + Pichette
Carl Abbott

Or in St. Petersburg...

Wannemacher Russell

we are a firm in nyc that is looking to team up with
a firm located within a hour drive of sarasota, Florida
to enter the 'Adaptive Use Design Competition to Save Paul Rudolph’s Riverview High School'

in that case, Guy Peterson may be your best bet, if they are willing. Guy is a very talented architect with a quality staff and strong ties to the community...he may already be involved with that project in some way.

Carl Abbot has some serious skills too...don't know much about the others posted here.

another quality design firm in the area (tampa) is Alfonso Architects

and props to you for tackling this project. it should be a blast to work on...

i'd be willing to bet that guy petersen, michael halflants, and maybe even carl abbott would already be going after this competition themselves... if you're with a starchitect type firm in nyc, i'd probably call halflants... their relatively young and michael is a prof at usf...

oh yeah... halflants taught a studio last year that dealt with the sarasota highschool... so he may have some interesting insights...

I think some of those guys sit on the board for that foundation saving it. Wouldn't it be a little bit of conflict of interest. But hey what do I know. It appears that most of the people involved with putting on that whole bit about keeping riverview high school around are the local big shots. I'm in Bradenton, just 15 mins north of sarasota.

You might be better off looking in tampa