Murina guilleni is a species of vesper bat found in Thailand and the Nicobar Islands.

[1] Its description was the result of a taxonomic split of the round-eared tube-nosed bat (Murina cyclotis).

The holotype had been collected in 2010 by P. Soisook at Rajjaprabha Dam in the Surat Thani province of Thailand.

The fur on its back is bicolored: the roots of individual hairs are gray, while the tips are orangeish-brown.

Its belly fur is dark gray, with hairs around the throat and chest tinged with orange.