The Arieșul Mic (Hungarian: Kis-Aranyos) is a river in the Apuseni Mountains, Alba County, western Romania.

It is the right headwater of the river Arieș.

[1][2] It flows through the villages Avram Iancu and Vidra, and joins the Arieșul Mare (the other headwater) in Mihoești near Câmpeni.

[3] Its length is 34 km (21 mi) and its basin size is 160 km2 (62 sq mi).

This article related to a river in Alba County is a stub.