We found 131 species of wood-inhabiting fungi in two different beech forest types in the Carpathian Mountains of Ukraine. The corticioid and poroid aphyllophorales (Basidiomycetes) showed a remarkably high species richness. Among them species highly depending on large amounts of dead wood, especially logs for growth and fruiting, such as Dentipellis fragilis. The woodruff beech forests (Galio-Fagenion) harbour a greater number of fungal species than the fir beech forests (Abieti-Fagenion). These beech forests in the Carpathian Mountains provide an interesting opportunity to study the beech forests in Europe in their natural appearance, not or hardly influenced by human activity.