Lahner is a surname. Notable people with the surname include:
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Emile Lahner (1893–1980), Hungarian painter
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Franz Lahner (1893–1966), Austro-Hungarian pilot
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György Lahner
György Lahner (also ''Láner'' or ''Láhner'', ; 6 October 1795, in Necpál (present-day Necpaly, Slovakia) – 6 October 1849, in Arad) was a honvéd general in the Hungarian Army. He was executed for his part in the Hungarian Revolution o ...
(1795–1849), Hungarian army general
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Josef Lahner, Austrian para-alpine skier
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Timothy Lahner (born 1966), South African rower
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