Alicia Florrick
Played by Julianna Margulies
Alicia returns to work as a junior litigator at a prestigious law firm after her husband's corruption scandal and incarceration. She tries to juggle both home and professional life with the ongoing scandal surrounding her husband. Alicia finds herself in the spotlight for all the wrong reasons and tries to shield her children from the chaos.

Cary Agos
Played by Matt Czuchry
Cary is another junior associate, taken on at the same time as Alicia. Cary and Alicia are in competition as there is only one permanent position at the firm.

Kalinda Sharma
Played by Archie Panjabi
Kalinda is the firm's in-house private investigator. She previously worked for Peter Florrick, who fired her.

Will Gardner
Played by Josh Charles
Will is an old friend of Alicia's from law school, and a partner at the law firm. He is attracted to Alicia and seems to want more than her friendship as the season progresses.

Diane Lockhart
Played by Christine Baranski
Diane is a senior partner at the law firm. She is very liberal and has strong opinions on many issues, including an extreme dislike of guns and violence, while at the same time developing a romantic relationship with an ultra-conservative ballistics expert.

Grace Florrick
Played by Makenzie Vega
Grace is the daughter of Alicia and Peter Florrick

Zach Florrick
Played by Graham Phillips
Zach is the son of Alicia and Peter Florrick.

Peter Florrick
Played by Chris Noth
Peter is Alicia's husband and former State's Attorney of Cook County. He was imprisoned for political corruption. During his initial trial, it was also revealed that he had numerous extramarital affairs with multiple prostitutes. In the middle of season 1 he is released on house arrest with an electronic monitoring device while preparing for a retrial.