Ikonnikov's bat (Myotis ikonnikovi) is a species of vesper bat. An adult Ikonnikov's bat has a body length of 4.2–5.1 cm, a tail of 3.1–4.0 cm, and a wing length of 3.3–3.6 cm. It is found in eastern Siberia, the Ussuri region, Sakhalin, Hokkaido and Honshu (Japan), and the Korean Peninsula.