Norway spruce (Picea abies (L.) Karst.) is one of the most important species of forest trees in Bosnia and Herzegovina, both for economic and ecological aspects. In this paper we aimed to present an overview of the most important parasitic and saprophytic fungi occurring in pure and mixed Norway spruce stands in Bosnia and Herzegovina. We also aimed to compare the fungal diversity associated with Norway spruce in Bosnia with those found in Serbia and Montenegro. In total, 18 parasitic and saprophytic fungi have been found associated with Norway spruce in Bosnia and Herzegovina, including six species associated with needles and 12 species of decay fungi. The most important wood decay fungi included Armillaria ostoyae (Romagn.) Herink, Fomitopsis pinicola (Sw.) P. Karst., Gloeophyllum sepiarium (Wulfen) P. Karst, Heterobasidion parviporum Niemelä & Korhonen, Phaeolus schweinitzi (Fr.) Pat. and Rhizina undulata Fr.