The small mouse-tailed bat (Rhinopoma muscatellum) is a species of bat in the Rhinopomatidae family. It is found in Afghanistan, Iran, Oman, and possibly Ethiopia, ranging from the Sistan Basin in Iran well into the Helmand River basin of south-western Afghanistan.
Small mouse tailed bats have a wingspan of , a body length of and a tail the same length as its body. Their diet conists of flying insects which they eat whilst flying.
This species was demonstrated as distinct from R. hardwickei based on mutually exclusive morphological features; the small mouse-tailed bat has a nearly unridged skull with small teeth and large cavities filled with fluid.