Mahaffy

Mahaffy is a surname of Scottish origin, and is an Anglicisation of the Gaelic name Mac Dhuibhshithe. It is a sept of Clan Macfie in Scotland, but the clan originated in Ireland. There the name is found largely in County Donegal, Ulster.

People with the surname Mahaffy include:
 * Arthur Arnold Mahaffy (1861–1947), Canadian politician
 * James Mahaffy (1905–1986), Canadian politician
 * John Mahaffy (ice hockey) (1918–2015), Canadian hockey player
 * John Pentland Mahaffy (1839–1919), Irish academic
 * Leslie Mahaffy (1976–1991), Canadian murder victim