The Broadway favorite will play James Castro, Cook County state's attorney.
Cerveris took home the Tony Award in 2004 for his work in Assassins and was nominated for his performances in Evita, Lovemusick, Sweeney Todd and The Who's Tommy. He has also appeared on Broadway in In the Next Room, Hedda Gabler, Cymbeline and Titanic.
"The Good Wife" airs Sunday evenings at 9 PM ET on CBS.