Seventeen ascomycetes and four fungi imperfecti collected on Tenerife represent the first records of marine fungi from the Canary Islands. The majority occurred on wood, three species were associated with algae, two were found in foam along the shore, and one lived in the shells of balanids. The most frequently collected species were Microthelia maritima (Linder) Kohlm., Ceriosporopsis halima Linder, and Torpedospora radiata Meyers. The new combination Banhegpia uralensis (Naoumoff) is proposed.