Johan Gottlieb Gahn (19 August 1745 – 8 December 1818) was a Swedish chemist and metallurgist who isolated manganese in 1774.

</references>

Further reading

  • Article in Svenskt biografiskt handlexikon
  • Eggerlz H.P., Palmstedt C. Nekrolog. Jahann Gottlieb Gahns Leben. // Jahrbuch der Chemie und Physik. - Nürnberg, 1822. P. 140.