William Mackesy (8 April 1880 – 12 November 1956) was an Irish dual player of Gaelic games, a hurler and a footballer.
At club level he played with Lees and Blackrock and was a member of the Cork senior teams in both codes.
In a 12-year span from 1902 to 1914 he won a combined total of 13 County Championship medals across both codes including three hurling-football doubles.
His debut season with the Cork senior hurling team two years later ended with him claiming a winners' medal after a defeat of London in the All-Ireland final.
[2][3] Mackesy was born in Buttevant, County Cork but began his business career after moving to Kinsale.