Hugh Mackay or MacKay may refer to:
Hugh Mackay (Scottish general) (c. 1640–1692), Scottish general in Dutch service Hugh Mackay of Bighouse (fl. 1728–1746), Scottish soldier Hugh Mackay (New Brunswick politician, died 1848) (c. 1751–1848), American-born politician, judge and soldier in New Brunswick Hugh Mackay (Quebec politician) (1832–1890), Scottish-born businessman and politician in Quebec Hugh Mackay (footballer) (1867–?), Scottish footballer Hugh Mackay (New Brunswick politician, born 1887) (1887–1957), Canadian politician Hugh Mackay, 14th Lord Reay (1937–2013), member of the British House of Lords Hugh Mackay (social researcher) (born 1938), Australian psychologist and social researcher Hugh MacKay (Nova Scotia politician) (born 1954/55), Canadian politician Hugh Colin MacKay (fl. 1983–2017), Canadian Surgeon General
See also Hugh McKay (disambiguation)