It may refer to:
- Anna Ilsabe Lehmann, wife of Barthold Brockes
- Beatrix Lehmann, British actress
- Erika Lehmann, Nazi German spy
- Darren Lehmann, Australian cricket batsman
- Dirk Lehmann, German footballer
- Erich Leo Lehmann, American statistician
- Ernst A. Lehmann, German airship pilot
- Federico Carlos Lehmann (1914–1974), Colombian ornithologist
- Frederick William Lehmann, former United States Solicitor General
- Geoffrey Lehmann, Australian poet
- Hans Lehmann, German submarine commander
- Hans G. Lehmann, German photographer
- Harry Lehmann, German physicist
- Lehmann-Symanzik-Zimmermann
- Henri Lehmann, German artist
- Henry Lehmann, American engineer, emigre from Germany
- Herman Lehmann (1859–1932), American kidnapped by Native-Americans
- Inge Lehmann, Danish seismologist
- Lehmann discontinuity
- Issachar Berend Lehmann, German banker
- Jacob Heinrich Wilhelm Lehmann (1800–1863), German astronomer
- Lehmann (lunar crater)
- Jean-Pierre Lehmann, Professor of International Political Economy at IMD and Founding Director of The Evian Group at IMD
- Jens Lehmann, German football (soccer) player (goalkeeper)
- Johann Georg Christian Lehmann, German botanist
- Johann Gottlob Lehmann, German geologist
- John Lehmann, English poet
- Jörgen Lehmann, Danish-born Swedish chemist
- Julius Friedrich Lehmann, promoter of social psychiatry during the Third Reich
- Justus Lehmann, prominent German-American physiatrist
- Karl Bernhard Lehmann (1858–1940), German microbiologist
- Karl Lehmann (*1936), Bishop of Mainz, Cardinal of the Catholic Church
- Kevin K. Lehmann, American chemist
- Lilli Lehmann (1848–1929), German soprano and voice coach
- Lotte Lehmann (1888–1976), German singer
- Marcus Lehmann (1831-1890), German Rabbi and author
- Michael Lehmann, film and television director
- Olga Lehmann, English artist and film designer
- Orla Lehmann, Danish statesman
- Otto Lehmann (physicist) (1855–1922), German physicist
- Otto Lehmann (movie producer) (1889–1968), German movie producer
- Peter Lehmann (winemaker), Australian vintner
- Peter Lehmann (author), German author and publisher
- R. C. Lehmann, politician, humourist and father of Beatrix, Rosamond and John
- Rosamond Lehmann, British novelist
- Rudolph Chambers Lehmann, former editor of Punch magazine
- Stephan Lehmann, Swiss football goalkeeper
- Thomas Lehmann, American board game designer
- Willi Lehmann, German spy for the Soviets
- Winfred P. Lehmann, American linguist