Neptis rivularis, the Hungarian glider, is a species of butterfly in the family Nymphalidae.

The upper side of the forewings is black or black-brown in colour, with a band of white spots.

One or more smaller white spots can also be found between the band and the wing root.

The underside is rusty brown and otherwise shows the same white markings as the upper side.

The upper side of the hind wings is also black or black-brown in colour, edged with white on the outside with a semicircular, broad, white band, which is only broken by the dark veins.