Auyán-tepui, also spelt Ayan, is a tepui in Bolívar state, Venezuela. It is the most visited and one of the largest tepuis in the Guiana Highlands, with a summit area of 666.9 km2 (257.5 sq mi) and an estimated slope area of 715 km2 (276 sq mi).

A tepui, or tepuy, is a table-top mountain or mesa found in South America, especially in Venezuela and western Guyana. The word tepui means "house of the gods" in the native tongue of the Pemon, the indigenous people who inhabit the Gran Sabana.