Callambulyx tatarinovii or unmonsuzume (ウンモンスズメ) in Japanese is a species of moth of the Sphingidae family. It is found from northern Xinjiang across northern China, Mongolia, southern Siberia to the Russian Far East and Japan, and then south through Korea and central China to eastern Tibet. It is also found in Taiwan. The wingspan is 56–82 mm. It is very similar to Smerinthus kindermannii, but the forewing colours are predominantly green and grey although there is a northern form in which all green coloration is replaced by brown.