"We're absolutely thrilled that Michael has agreed to play this role," executive producers and show creators Robert and Michelle King said in a statement. "His intelligence as an actor, combined with his incredible comic timing will really bring this smart, cynical lawyer to life."
Fox, who has Parkinson's disease, is best known for his role in the Back to the Future trilogy and as Alex P. Keaton on Family Ties, for which he won three Emmys. He also won Emmys for his starring role on Spin City in 2000 and his guest work on Rescue Me in 2009.
Check out Emmy nominee Julianna Margulies' best roles
The Good Wife received nine Emmy nominations for its freshman season, including best drama and best dramatic actress for Margulies. The show returns for its second season on Tuesday, Sept. 28 at 10/9c.
Are you excited to see Fox back on your TV?