Available information about bees of the genus Lasioglossum in Azerbaijan is summarised. One hundred and one species are currently known from this country. Twenty-three species are newly recorded from the Caucasus region and additional eighteen species are newly recorded from Azerbaijan. Three species are excluded from the list of Azerbaijani fauna. A new synonymy is proposed for Lasioglossum euxinicum Ebmer, 1972 = L. alievi Pesenko, 1986, syn. nov., and a lectotype is designated for Halictus schelkovnikovi Kokujev, 1913.
