Johan Hartmann

Johan, Johann, or Johannes Hartmann may refer to:

• Johannes Hartmann (1568–1631), German chemist
• Johannes Franz Hartmann (1865–1936), German physicist and astronomer
• Johann Hartmann (1726–1793), Danish composer
• Johan Ernst Hartmann (1770–1844), Danish composer
• Johan Peter Emilius Hartmann (1805–1900), Danish composer

See also

• Carl Johan Hartman (1790–1849), Swedish physician and botanist
• Hartmann
• Hartman
• John Hartmann
• John Hartman (disambiguation)