Alexander McKay (c. 1804 – 3 June 1830) was a Scottish heavyweightbare-knuckle fighter. He fought in just five prize fights, these are:
Loss to Simon Byrne after 47 mins, in 5 rounds on 3 May 1827
Win over Peter Curran after 18 mins – in 1828
Win over Paul Spencer after 25 rounds on 16 October 1828 £40
Win over Paul Spencer after 30 mins in 34 rounds on 17 February 1829
Loss to Simon Byrne after 53 mins in 47 rounds on 2 June 1830
McKay died of a brain haemorrhage 30 hours after his second fight against Byrne. The news of his death was greeted in his native Scotland by rioting in which several died. He is buried in churchyard in the village of Hanslope, Buckinghamshire. The following epitaph is engraved on his tombstone.