Marschner is a surname. Notable people with the surname include:

• Adolf Eduard Marschner (1819–1853), German composer

• Heinrich Marschner (1795–1861), German composer

• Kurt Marschner (1913–1984), German operatic tenor and actor

• Thorsten Marschner (born 1968), German high jumper

• Wolfgang Marschner (1926–2020), German violinist, teacher of violin, composer, and conductor