|Full name||John Alexander Gilchrist|
|Born||November 9, 1945|
Ocean Falls, British Columbia
|Height||1.83 m (6 ft 0 in)|
|Weight||79 kg (174 lb)|
John Alexander Gilchrist (born November 9, 1945) is a Canadian former swimmer.
Gilchrist competed in the 1964 Summer Olympics and 1968 Summer Olympics, with his best performance being in 1968, finishing fourth in the 4x200 metres relay. Despite being of Canadian nationality he won the ASA National British Championships over the 1,650 yards freestyle in 1965  and the 440 yards medley title in 1965.