Charles Garnet Fynn (24 April 1897 – 26 August 1976) was an English first-class cricketer.
A right-handed batsman who bowled right-arm slow, he made his debut for Hampshire against Lancashire in the 1930 County Championship.
From 1930 to 1931 Fynn represented Hampshire in nine first-class matches, with Fynn's final first-class appearance for Hampshire coming against the touring New Zealanders.
In his nine matches, Fynn scored 45 runs at an average of 6.42, with a high score of 21.
With the ball Fynn took eleven wickets at a bowling average of 40.54, with best figures of 3/92.
Fynn died at Bournemouth, Dorset on 26 August 1976.