Donna McKechnie (b. 1940) is an American actress and choreographer best remembered for her Tony Award-winning role as Cassie in the Broadway musical A Chorus Line. Among her stage credits are roles in the touring productions of West Side Story and Annie Get Your Gun, as well as the original Broadway production of Stephen Sondheim's Company, and the revival of On the Town.
Rowlf sang "You and I and George" to McKechnie on the July 22, 1966 episode of The Mike Douglas Show.
McKechnie's television credits include a stint on the vampire soap opera Dark Shadows (as Amanda Harris) and appearances on Rowan & Martin's Laugh-In, Fame, and Family Ties.