The lawyer's (Matt Czuchry) frosty father will debut in the CBS drama's fourth season and may appear on a recurring basis, TVLine reports.
Shea is known for playing Lex Luthor on '90s comic book TV series Lois & Clark: The New Adventures of Superman and also starred in sci-fi drama Mutant X.
His recent credits include the recurring role of Blair's father Harold on Gossip Girl and the pilot of USA network's Common Law.
Other stars confirmed to appear in the new season of The Good Wife include Christina Ricci (Pan Am), Nathan Lane (The Birdcage) and Marc Warren (Hustle).
The series returns to CBS on Sunday, September 30 at 9/8c. In the UK, The Good Wife airs on More4.
> Kristin Chenoweth returns to The Good Wife following injury
> The Good Wife casts GCB star Miriam Shor in season four
Watch a Good Wife video recap below: