Susan J. Blommaert (born October 13, 1947) is an American actress. She is best known for her role as Mr. Kaplan on the drama series The Blacklist, and for her recurring role as Judge Rebecca Steinman in Law & Order, Law & Order: Special Victims Unit, and Law & Order: Trial by Jury. She has portrayed judges in a number of legal dramas, including Judge Rudy Fox in The Practice, Judge Barbara Burke in Family Law, and Judge Hanlon in Bull.