Langbein is a surname of German origin, meaning "long leg", and may refer to:

• Robert Langbein, El Cerrito raconteur and golfer
• Annabel Langbein, New Zealander celebrity cook, food writer and publisher
• August Friedrich Ernst Langbein (1757–1835), German humoristic writer
• Dieter Langbein, German physicist
• Fritz Langbein (1891–1967), New Zealander civil engineer
• George F. Langbein (1842–1911), New York politician
• Hermann Langbein (1912-1995), Austrian who fought in the Spanish Civil War with the International Brigades
• J. C. Julius Langbein (1846–1910), New York politician and judge
• John H. Langbein (born 1941), Sterling Professor of Law and Legal History at Yale Law School
• Martha Langbein (born 1941), German athlete

• Henry Marshman Havelock-Allan
• Henry Martin
• Henry Martin Arens
• Henry Martin (cartoonist)
• Henry Martindale
• Henry Martinez
• Henry Martin (political figure)
• Henry Martin "Scoop" Jackson
• Henry Martin (socialist)
• Henry Martin (song)
• Henry Martin “Scoop” Jackson
• Henry Martyn Blossom
• Henry Martyn Hoyt
• Henry Martyn Scudder
• Henry Martyn Spofford
• Henry Martínez (boxer)
• Henry Masauko Blasius Chipembere
• Henry Mason Mathews
• Henry Mason (piano manufacturer)
• Henry Massalin
• Henry Maston Mullinix
• Henry Maston Mullinnix
• Henry Mateo
• Henry Mather Greene
• Henry Mathews