The new extinction risk assessments of the mosses of Serbia have been completed. Based on the available data, 27.18% of Serbian moss flora (174 species) is under threat (status 2024). Nearly 20% (129 species) of Serbian moss flora is considered to be Data Deficient (DD) and 5.16% (33 species) Near Threatened (NT). These findings clearly indicate the urgent need for field investigation and species biology research in order to define the major threats and adequate conservation measures.