Ophiostoma is a genus of fungi within the family Ophiostomataceae.

[3] Note the former type species of Ophiostoma piliferum (Fr.)

(1919) is now Ceratocystis pilifera, Ceratocystidaceae family.

[4] The genus has a cosmopolitan distribution worldwide, except for central Asia, northern Africa and Russia.

[1] The following 129 species are accepted in the genus Ophiostoma:[5]