The article presents the results of phylogenetic analysis of surface protein hemagglutinin and neuraminidase genes of influenza A virus of H5N1 subtype isolated from gull in the territory of the Republic of Kazakhstan in 2015. Cluster affiliation of Kazakhstan isolate and relationship with other influenza viruses of A/H5 subtype from international database GenBank are presented. It is concluded that it is necessary to continuously monitor the avifauna of Kazakhstan in order to isolate current variants of pathogens.