Kelly Gaffney is a fictional character portrayed by Amy Carlson on the television program Law & Order: Trial by Jury. She was named after Dick Wolf's mother, whose maiden name was Gaffney. Gaffney is a Manhattan assistant district attorney, consistently working alongside Tracey Kibre (Bebe Neuwirth). Of the two ADAs, Gaffney is the younger assistant who comes from an Irish Catholic family with a history that runs deep in the City of New York. Gaffney is a graduate of Boston College, and is often more by-the-book when it came to law and its application than her superior. She often challenges Kibre in pertinence to cases they prosecute, and sees the law in more shades of gray than her partner.