# McKiernan

McKiernan is a surname. Notable people with the surname include:
* Andrew J. McKiernan (born 1970, Sydney, Australia), Australian speculative fiction writer and Illustrator
* Brian Mág Tighearnán (anglicised Brian McKiernan) was chief of the McKiernan Clan of Tullyhunco, County Cavan from 1358 until 1362
* Catherina McKiernan (born 1969), Irish long-distance runner
* Conchobar ‘Buidhe’ Mág Tighearnán (anglicised Conor ‘The Tawny’ McKiernan) was chief of the McKiernan Clan of Tullyhunco, County Cavan from 1312 until 1314
* Cú Connacht Mág Tighearnán (anglicised Constantine McKiernan) was chief of the McKiernan Clan of Tullyhunco, County Cavan from 1383 until his death in 1412
* David D. McKiernan (born 1950), United States Army four-star general and Commander ISAF and USFOR-A
* Dennis McKiernan (born 1932), American fantasy writer best known for The Iron Tower
* Domhnall ’An Saithnech’ Mág Tighearnán (anglicised Donal McKiernan of Saitne) was chief of the McKiernan Clan of Tullyhunco, County Cavan from 1311 until 1312
* Douglas Mackiernan the first officer of the Central Intelligence Agency (CIA) to be killed in the line of duty.
* Duarcán Mág Tighearnán, the Second (anglicised Durcan McKiernan) was chief of the McKiernan Clan of Tullyhunco, County Cavan from 1279 until his death in 1290
* Eoin McKiernan (1915–2004), early Irish Studies scholar and founder of Irish American Cultural Institute
* Fergal Mág Tighearnán the First, (anglicised Fergal McKiernan) was chief of the McKiernan Clan of Tullyhunco, County Cavan from 1362 until his death in 1383
* Fergal Mág Tighearnán, the Second, (anglicised Fergal McKiernan) was chief of the McKiernan Clan of Tullyhunco, County Cavan from 1512 until his death in 1523
* Fergal Mág Tighearnán, the Third, (anglicised Fergal McKiernan) was chief of the McKiernan Clan of Tullyhunco, County Cavan until his death in 1588
* Gíolla Íosa Mór Mág Tighearnán (d. 1279), (anglicised ‘Big’ Gilleese McKiernan), was chief of the McKiernan Clan of Tullyhunco, County Cavan from c.1269 until his death in 1279
* Íomhaor Mág Tighearnán, the Second, (anglicised Ivor McKiernan), was chief of the McKiernan Clan of Tullyhunco, County Cavan from 1258 until his death c.1269.
* Jim McKiernan (1944–2018), Irish-born Australian politician
* John Mág Tighearnán the First, (anglicised John McKiernan) was chief of the McKiernan Clan of Tullyhunco, County Cavan until his death in 1499
* John Mág Tighearnán, the Second, (anglicised John McKiernan) was chief of the McKiernan Clan of Tullyhunco, County Cavan including the period 1641 to 1657
* John S. McKiernan (1911–1997), American Democratic politician and Lieutenant Governor and Governor of Rhode Island
* Kevin McKiernan (born 1944), veteran foreign correspondent and documentary filmmaker
* Macraith Mág Tighearnán (d.1258), (anglicised Magrath McKiernan), was chief of the McKiernan Clan of Tullyhunco, County Cavan from c.1240 until his death in 1258.
* Matha Mág Tighearnán (anglicised Matthew McKiernan) was chief of the McKiernan Clan of Tullyhunco, County Cavan from 1290 until 1311
* Michael McKiernan, rugby league footballer
* Sithric ‘Carrach-in-Cairn’ Mág Tighearnán (anglicised Sitric ‘the Scabbed of Carn’ McKiernan) was chief of the McKiernan Clan of Tullyhunco, County Cavan in the year 1290
* Tadhg Mág Tighearnán (anglicised Teigue McKiernan) was chief of the McKiernan Clan of Tullyhunco, County Cavan until his death in 1474
* Tawnia McKiernan, American television director
* Tomás Mág Tighearnán (anglicised Thomas McKiernan) was chief of the McKiernan Clan of Tullyhunco, County Cavan from 1314 until his death in 1358
* William Mág Tighearnán (anglicised William McKiernan) was chief of the McKiernan Clan of Tullyhunco, County Cavan from 1499 until his death in 1512