Jack Blackham, Australian cricketer (b. 1854)
John McCarthy Blackham (11 May 1854 – 28 December 1932) was a Test cricketer who played for Victoria and Australia.

A specialist wicket-keeper, Blackham played in the first Test match at the Melbourne Cricket Ground in March 1877 and the famous Ashes Test match of 1882. Such was his skill in the position that he revolutionised the art of wicket-keeping and was known as the "prince of wicket-keepers". Late in his career, he captained the Australian team.