McLagan is a surname. Notable people with the surname include: Angus McLagan (1891–1956), New Zealand politician Ian McLagan (1945–2014), English musician Jennifer McLagan, Canadian chef and food writer John McLagan (1838–1901), Canadian newspaper publisher Kim McLagan (1948–2006), English model Peter McLagan (1823–1900), British politician Sara Anne McLagan (c. 1856–1924), Canadian newspaper publisher See also Maclagan (disambiguation)