We report 23 lichenicolous fungi new to Sweden, among these, one is new to Europe, 21 are new to Fennoscandia, and two are newly reported for Norway. This article focuses only on mitosporic fungi. The newly reported species are Acremonium pertusariae, Cladophialophora dimorphospora, Cladosporium licheniphilum, Corynespora laevistipitata, Didymocyrtis cladoniicola, D. grumantiana, Ellisembia lichenicola, Epithamnolia xanthoriae, Gonatophragmium lichenophilum, Lichenoconium lichenicola, Lichenostella griseofusca, Microcera physciae, Psammina filamentosa, Pseudocercospora lichenum, Sclerococcum phaeophysciae, S. toensbergii, Taeniolella cladinicola, T. diploschistis, Talpapellis lendemeri, Trimmatostroma acetabuli, T. vandenboomi, Venturia lichenophila and Xylohyphopsis xanthoriicola. The reports of Talpapellis lendemeri represent the first record in Europe. New hosts are reported for Corynespora laevistipitata, Ellisembia lichenicola, Gonatophragmium lichenophilum, Lichenoconium lichenicola, Psammina filamentosa, Sclerococcum toensbergii and Venturia lichenophila.