Quick answer
Jóhann is a boy name.
Meaning and history
German form of Iohannes (see John ). Famous bearers include German composer Johann Sebastian Bach (1685-1750), German novelist and poet Johann Wolfgang von Goethe (1749-1832), and Austrian composers Johann Strauss the Elder (1804-1849) and his son Johann Strauss the Younger (1825-1899).
Notes and context
Usage: german