Indonautilus is an involute nautilid from the Middle and Upper Triassic.
(Anisian-Norian), with a small or occluded umbilicus and subrectangular whorl section belonging to the Liroceratidae (Clydonaulilaceae).
Flanks are slightly bowed, converging on a flattened venter.
Ventro-lateral shoulders are narrowly rounded or angular.
Indonautilus has been found in Egypt, Israel, the Himalayas, and East Indies.