Ricci, 32, will guest-star in an upcoming episode as a controversial comedienne in need of the firm's help.
Ricci joins an impressive roster of guest stars for the legal drama's upcoming fourth season, including Kristin Chenoweth, Nathan Lane, Amanda Peet, Maura Tierney, Marc Warren, Miriam Shor and Annabella Sciorra.
In addition to starring on ABC's Pan Am last season, Ricci is known for her film work, including Mermaids, The Addams Family, Now and Then and Sleepy Hollow. She also earned an Emmy nomination in 2006 for her guest-starring role in the post-Super Bowl episode of Grey's Anatomy.
The new season of The Good Wife premieres on Sunday, Sept. 30 at 9/8c on CBS.