The Snoop Sisters is an American comedy-mystery television show that aired on NBC during the 1973–1974 season, airing on a monthly rotation (referred to as a "wheel") as part of the NBC Tuesday Mystery Movie, sharing the timeslot with Banacek, Tenafly, and Faraday and Company.

The show stars Helen Hayes and Mildred Natwick as two elderly sisters, Ernesta Snoop and Gwendolyn Snoop Nicholson, who routinely stumbled across mysteries, which they solve. The series followed the 1971 ABC television movie Do Not Fold, Spindle or Mutilate, which also starred Hayes and Natwick working together as amateur sleuths, along with Myrna Loy and Sylvia Sidney. A pilot for the series, also titled The Snoop Sisters, but later retitled "The Female Instinct", aired on December 16, 1972, on NBC.

Guest stars during the series' brief run include Joan Blondell, Jill Clayburgh, Alice Cooper, Bo Svenson, William Devane, Tammy Grimes, George Maharis, Roddy McDowall, Eve McVeagh, Geraldine Page, Walter Pidgeon, Vincent Price, Fritz Weaver and, in her final screen appearance, Paulette Goddard.