Lynen is a surname. Notable people with the surname include:
Amédée Lynen (1852–1938), Belgian painter Feodor Lynen (1911–1979), German biochemist Robert Lynen (1920–1944), French actor Senne Lynen (born 1999), Belgian footballer
See also Feodor-Lynen-Gymnasium Planegg, government secondary school in Planegg in the German