Edward John Jackett (4 July 1878 – 11 November 1935), known as John Jackett, was an English rugby union player, who represented the England national rugby union team, the British Lions, and competed in the 1908 Summer Olympics for Great Britain.

[1][2] He is the elder brother of Richard ″Dick″ Jackett, who was also in the Great Britain team which won the Olympic silver medal.

On 8 February 1901, Jackett appeared at Falmouth County Court for the non-payment of damages to Caroline Amelia Oliver of Portscatho for a breach-of-promise of marriage.

[6] On 11 May 1901, he left for Kimberley in South Africa on the steamer Briton, travelling with two other rugby players, W Christophers and F Toy, where they joined the Cape Mounted Police.

Jackett was also a member of the Cornish rugby union team, which, representing Great Britain, won the 1908 Olympic silver medal on 26 October 1908.