The data on 19 species of megachilid bees collected in the Nakhchivan Autonomous Republic of Azerbaijan in 2019–2022 are reported. Fifteen species are new for Azerbaijan; four other species, previously known by literature records, are confirmed for Azerbaijan. Anthidium gussakovskiji Mavromoustakis, 1939 is excluded from the fauna of the republic. The known fauna of Azerbaijan numbers 174 species of megachilid bees.
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