Vipera ammodytes montandoni is a venomous viper subspecies[3] endemic to Bulgaria and southern Romania.

[4] The subspecific name, montandoni, is in honor of "M. A. Montandon" who sent some of the first specimens of this snake to Boulenger.

According to Boulenger (1913): "Naso-rostral shield never reaching the canthus rostralis nor the summit of the rostral shield, which is deeper than broad (once and one seventh to once and a half); rostral appendage clad with 10-14 scales, in three (rarely two or four) transverse series between the rostral shield and the apex.

A more or less distinct blotch on the lower lip, involving five to seven labial shields without complete interruption.

Lower surface of end of tail yellow.