Trudy Anne Monk (née Ellison) is a fictional character on the television show Monk. She is the late wife of Adrian Monk and daughter to Dwight and Marcia Ellison. Monk's attempt to solve her murder is the show's longest-running plot arc.

She was played by Stellina Rusich during first and second seasons, Melora Hardin during third season, and Hannah Contrucci as young Trudy during fourth season. Lindy Newton plays Trudy in a college flashback in the fifth season.