'''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== <!-- {{canned search|Johan Hartman|Johan Hartmann|Johann Hartman|Johann Hartmann}} --> <!-- {{canned search|Johanne Hartman|Johanne Hartmann|Johannes Hartman|Johannes Hartmann}} --> <!-- {{canned search|Johane Hartman|Johane Hartmann|Johanes Hartman|Johanes Hartmann}} --> * Carl Johan Hartman (1790–1849), Swedish physician and botanist <!-- * John Hartman (disambiguation) --> <!-- * John Hardman (disambiguation) --> * Hartmann * Hartman * John Hartmann * John Hartman (disambiguation)
{{hndis|Hartman, Johan}}