Needless to say, Boston Legal is awash in lawyers. Besides the main cast and recurring characters who are attorneys, there have been many other guest character lawyers. Here's the start of a list:

Crane, Poole & Schmidt Attorneys:
Jerry Austin
Barry Goal
Mark Halpern
Walter Seymore

District Attorneys and Assistant District Attorneys:
A.D.A. Otto Beedle
A.D.A. Frank Ginsberg
A.D.A. Duncan Jones
A.D.A. Adam Mersel
A.D.A. Joshua Wendt
A.D.A. Jonathan Winant

US Attorneys:
A.U.S.A. Carl Newell

Other Opposing Counsel:
Attorney Beckham
Shelley Ford
Adam Jovanka
John Lennox
Shelby Morris
Warren Peters
Attorney Tompkins