Jack Gilbert Ashenden (12 May 1911 – 14 November 1992) was a New Zealand cricketer who played first-class cricket for Wellington from 1936 to 1945.
A right-arm medium-pace bowler, Ashenden partnered Tom Pritchard in opening the bowling for Wellington in the 1938-39 Plunket Shield, when he and Pritchard were two of only six players in the competition to take 10 wickets or more.
He took 6 for 44 in the second innings of the innings victory over Otago.
At the end of the season he played for New Zealand against Sir Julien Cahn’s XI.