McTernan is a surname. Notable people with the surname include:
Brian McTernan, an American musician John McTernan (actor), an Australian actor John McTernan (born 1959), an English politician and political consultant Madeleine McTernan (born 2000), an Australian paralympic swimmer Sarah McTernan (born 1994), an Irish singer-songwriter
See also McKiernan Clan McKernan (surname) McKiernan McTiernan Tiernan Kiernan Kernan (disambiguation)