Krohn is the surname of several people:
Lars Monrad-Krohn, a Norwegian engineerKristin Krohn Devold, a Norwegian politicianMichael Krohn (musician), a Norwegian musicianLeena Krohn, a Finnish authorIrina Krohn, a Finnish member of ParliamentAino Krohn, a Finnish author better known as Aino KallasJuan María Fernández y Krohn, Catholic priest, would-be assassinKenneth Krohn, co-developer of the Krohn–Rhodes theoryRamble John Krohn, an American hip hop producer also known as RJD2Tracy Krohn, owner of Krohn Racing/TRGAugust David Krohn, a Russian zoologistJulius Krohn, nephew of August, fennoman and folkloristKaarle Krohn, Finnish folklorist, son of JuliusKatherine Elizabeth Krohn, German-born American authorIlmari Krohn, Finnish composer and musicologist, son of JuliusFelix Krohn, Finnish composer, son of IlmariJasmin Krohn (b. 1966), Swedish speed skaterJonathan Krohn, American journalist and writerPaysach Krohn, rabbiMichael Krohn-Dehli (b. 1983), Danish footballerChristine Krohn, a German Federal Court JusticeTim Krohn, recipient of the 1994 Conrad-Ferdinand-Meyer-PreisRebecca Krohn, New York City Ballet soloistDankert Krohn (1842–1906), Norwegian businessman active in Portugal with the Krohn Port wine companyMichael Krohn (1793–1878)Hans-Broder Krohn (1915–2009), European politician (Director for Agricultural Economics with the European Commission)Henrik Krohn (1826–1879) Norwegian poet, magazine editor and proponent for Nynorsk languageChester A. Krohn, American politician