Myotis izecksohni is a species of mouse-eared bat that is endemic to Brazil[1] and Argentina.

The eponym for the species name "izecksohni" is Brazilian biologist Eugênio Izecksohn.

[3] It is a medium- to large-bodied mouse-eared bat among those found in South America.

It lacks hairs along the outer edge of the uropatagium, which is a useful field identification characteristic.

[3] M. izecksohni was first documented in southeastern Brazil and has since been discovered in far northeastern Argentina.