Judith Ellen Light is an American actress and producer.
Although she began her career on the stage, Judith's breakthrough role was in the ABC daytime soap opera One Life to Live from 1977 to 1983, where she played the role of Karen Wolek, for which she won two Daytime Emmy Award for Outstanding Lead Actress in a Drama Series. Light later starred as Angela Bower in the long-running ABC sitcom Who's the Boss? from 1984 to 1992, and later starred in many television films and short-lived series. She played the recurring role of Elizabeth Donnelly in the NBC legal crime drama Law & Order: Special Victims Unit and Claire Meade in the ABC comedy-drama Ugly Betty, for which she was nominated for the Primetime Emmy Award in 2007.
She received her first nomination for a Tony Award in 2011, for her performance in the original Broadway play Lombardi. In 2012 and 2013, Light won two consecutive Tony Award for Best Featured Actress in a Play for performances in Other Desert Cities and The Assembled Parties. From 2013 to 2014, Light played the role of villainous Judith Brown Ryland in the TNT drama series, Dallas.