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.
Willoughby continued to play for Hampshire in 1886, representing the county in seven non first-class matches.
His final appearance for the club came against Hertfordshire.
From 1890 to 1894 Willoughby represented the county 27 times in non-competitive cricket.
In 1895 Willoughby represented Worcestershire in the inaugural Minor Counties Championship in a single match against Hertfordshire.