Ahn or AHN may refer to: People Ahn (Korean surname), a Korean family name occasionally Romanized as An Ahn Byeong-keun (born 1962, ), South Korean judoka Ahn Eak-tai (1906–1965, ), Korean composer and conductor Ahn Jung-hwan (born 1976, ), South Korean footballer Ahn Cheol-soo (born 1962, ), founder of AhnLab Inc, an antivirus software company Kristie Ahn (born 1992), American tennis player Natalie Ahn (born 1957), American chemist and biochemist Philip Ahn (1905-1978), American actor Ralph Ahn (1926-2022), American actor Viktor An, (born 1985 as Ahn Hyun-soo, ) South Korean short track speed skater Luis von Ahn, (born 1978) Guatemalan creator of CAPTCHA and co-founder of Duolingo Other uses Ahn, Luxembourg, a town All Headline News, a US news agency Allegheny Health Network, a non-profit hospital and healthcare group in Pennsylvania Ashton-under-Lyne railway station, UK (National Rail code) Athens–Ben Epps Airport serving Athens-Clarke County, Georgia, US (IATA airport code)