Adelphicos ibarrorum is a species of snake in the family Colubridae.

The specific name, ibarrorum (Latin, genitive, plural), is in honor of the Guatemalan Ibarra family, especially Jorge Alfonso Ibarra (1921–2000) and Germán A. Ibarra, both conservationists and naturalists.

[3] A. ibarrorum is only known from the highlands of south-central Guatemala in the region of its type locality near Chichicastenango.

[1][4] A fossorial snake, A. ibarrorum is known from pine-oak forest and forest edge habitats, at elevations of 2,000–2,100 m (6,600–6,900 ft) above sea level.

[1] The largest known specimen and the holotype of A. ibarrorum is a female measuring 521 mm (20.5 in) in total length, including a tail length of 58 mm (2.3 in).