John Thomas Parnham (6 September 1856 – 18 February 1908) was an English first-class cricketer and umpire.

Parnham was born at Bottesford, Leicestershire. He made his debut in first-class cricket for a United Eleven against the touring Australians in 1882 at Tunbridge Wells.^[1] The following season he made three first-class appearances, playing twice for the Marylebone Cricket Club (MCC) against Oxford University and Cambridge University, and once for The Rest against a combined Nottinghamshire and Yorkshire cricket team at Bradford.^[1] He played once in 1885 for the MCC against Sussex, before playing for the North in the North v South fixtures of 1886 and 1887. His final first-class appearance came in 1889, for the MCC against Cambridge University at Fenner's.^[1] An all-rounder, he scored a total of 178 runs at an average of 19.77, with a high score of 90 not out for the North in 1886.^[2][3] With his slow left-arm orthodox bowling, he took 16 wickets at a bowling average of 18.37.^[2] His best figures of 7 for 25 came on his first-class debut for the United Eleven, with Parnham taking 5 for 101 in the Australians first-innings and 7 for 25 in their second-innings.^[4] Besides playing, Parnham stood as an umpire in three first-class matches during the 1880s,^[5] before later standing in four matches in the 1903 Minor Counties Championship.^[6] He died in February 1908 at Church, Lancashire.