Otthia is a genus of fungi in the family Botryosphaeriaceae.
The genus name of Otthia is in honour of Gustav Heinrich Otth (1806-1874), who was a Swiss mycologist and military officer.
[1] The genus was circumscribed by Theodor Rudolf Joseph Nitschke ex.
Karl Wilhelm Gottlieb Leopold Fuckel in Jahrb.
GBIF accepted species are one with added authors.