Isabelle's ghost bat (Diclidurus isabella) is a bat species found in northwestern Brazil, Guyana, and Venezuela, and possibly Colombia.

[1][2] It was discovered in October 1916 by Emilie Snethlage, and described by Oldfield Thomas in 1920.

It has been suggested that the species name is instead a reference to the color isabelline.

In that case, the common name should instead be the isabelline ghost bat.

[4] They are pale brown in color, with the head and shoulders appearing whitish.