[in Russian with English abstract: ] The paper presents data on 248 lichen species from the Bauntovsky District of the Republic of Buryatia, of them 233 are new to the district. Alectoria sarmentosa subsp. vexillifera new to East Siberia, and 6 species new to the Republic of Buryatia — Arthonia didyma, Aspicilia aquatica, Immersaria athroocarpa, Ionaspis lacustris, Ramboldia elabens, and Parmelia asiatica. Very interesting species is an aquatic lichen Collema ramenskii recorded in mountain lakes. Keywords: new records, lichen flora.