Mary Anissa Jones was an American child actress known for her role as Buffy Davis on the CBS sitcom Family Affair, which ran from 1966 to 1971. She died from combined drug intoxication when she was 18.

Family Affair is an American sitcom starring Brian Keith and Sebastian Cabot that aired on CBS from September 12, 1966, to March 4, 1971. The series explored the trials of well-to-do engineer and bachelor Bill Davis (Keith) as he attempted to raise his brother's orphaned children in his luxury New York City apartment. Davis' traditional English gentleman's gentleman, Mr. Giles French (Cabot), also had adjustments to make as he became saddled with the responsibility of caring for 15-year-old Cissy and the six-year-old twins, Jody and Buffy.