Frederick George Willoughby (25 April 1862 – 16 April 1952) was a Scottish born English first-class cricketer. Willoughby was a right-handed batsman who bowled left-arm medium pace. Willoughby made his first-class debut for Hampshire in 1885 against Derbyshire. Willoughby made eight first-class appearance for Hampshire in that season, with his final first-class match coming against Kent. At the end of the 1885 season Hampshire lost their first-class status, bringing to an end Willoughby's first-class career. Willoughby, who played as a bowler, took 25 wickets at a bowling average of 22.56, with best figures of 4-39.