Leemans is a Dutch occupational surname derived from leenman, a feudal tenant or vassal. It is particularly common in Flanders. People with this surname include:
Anthonie Leemans (1631–1673), Dutch still life painter, brother of Johannes
Egide François Leemans (1839 – 1883). Belgian painter, draughtsman and engraver
Fernand Leemans (born 1925), Belgian figure skater
Jo Leemans (born 1927), Belgian singer
Johannes Leemans (1633–1688), Dutch still life painter and wine dealer, brother of Anthonie
Ken Leemans (born 1983), Belgian footballer
Marc Leemans (1961), Belgian trade unionist
Pieter Leemans (1897–1980), Belgian classical musician and composer
Tuffy Leemans (1912–1979), American football player
Victor Leemans (1901–1971), Belgian (Flemish) sociologist and politician
Ward Leemans (1926–1998), Belgian sociologist and politician