Mimas christophi is a species of moth of the Sphingidae family. It is known from the Russian Far East, north-eastern China, South Korea and northern and central Japan. The wingspan is 59–77 mm. It is similar to Mimas tiliae but smaller and darker and showing a less extensive variation in forewing colour and pattern. Adults are on wing from late May to late August in Korea. The larvae have been recorded feeding on Alnus hirsute, Tilia, Acer, Ulmus, Salix and Betula in Primorskiy Kray in Russia and Alnus japonica, Quercus dentata, Ulmus davidiana var. japonica and Tilia amurensis in Korea.