Cecil Brabazon Ponsonby (26 December 1889 – 11 May 1945) was an English first-class cricketer: a right-handed batsman and wicket-keeper who played 74 times for Worcestershire between 1911 and 1928, captaining the county in 1927; he also made a single appearance each for Marylebone Cricket Club (MCC) and HK Foster's XI.
Ponsonby played only once more that summer, but the following year he made the only first-class fifty of his career, scoring exactly 50 not out for Worcestershire against Surrey, this time batting at seven.
Ponsonby made 34 dismissals (30 caught, four stumped) that year, by some distance his greatest tally for a single summer.
This was a chastening year for Worcestershire: in 30 County Championship matches they won not a single game, and against a Nottinghamshire side containing Larwood, Voce and Staples they were thrashed by an innings and 21 runs.
Ponsonby made a pair, but he did manage one final dismissal when he caught Notts' opener George Gunn off the bowling of Charles Tarbox.