Numerous additions are reported for the bryoflora of the Pechora-Ilych Biosphere Reserve (Komi Republic; Northern Urals). Field work was performed in three geographically separated areas, situated in different altitudinal belts in the basin of the Pechora River (61°25'-61°45' N – 56°53'-57°10' E; 62°00-11' N – 58°05-38' E; 62°00-07' N – 59°00-15' E). 81 bryophyte species and varieties have been found to be new to the Reserve, among them 17 species new to Komi Republic, 6 species (Lophozia pellucida, Sauteria alpina, Dicranella humilis, Bryum amblyodon, B. bicolor, Pohlia bulbifera) new to the Northern Urals, and 2 species (Cirriphyllum tommasinii, Pseudocalliergon trifarium) and 2 varieties (Lophozia pellucida var. pellucida, Dicranella schreberiana var. robusta) new to the whole Ural Mts. Thus, the total number of bryophyte taxa known from the Reserve is 319 species and 3 varieties of mosses and 91 species and 2 varieties of hepatics. The following abbreviations are used in the list of species: R – rare (species known from 1-3 localities within the study area); MC – moderately common (4-8 localities); C – common (9 and more localities); S+ means that sporophytes are present. Species new to Komi Republic are marked with (*), those new to the Northern Urals with (+).