Alzamay () is a town in Nizhneudinsky District of Irkutsk Oblast, Russia, located on the Toporok River (Angara River's basin) northwest of Irkutsk, the administrative center of the oblast, and from Nizhneudinsk, the administrative center of the district. Population:
It was founded in 1899 as a settlement around Alzamay railway station. Town status was granted to it in 1955.
Within the framework of administrative divisions, Alzamay is subordinated to Nizhneudinsky District. As a municipal division, the town of Alzamay is incorporated within Nizhneudinsky Municipal District as Alzamayskoye Urban Settlement.