Idlès (Arabic: إدلس) is a municipality in Tazrouk District, Tamanrasset Province, Algeria.

The largest nearby city is Tamanrasset; other smaller towns include In Amguel to the west and Tazrouk to the south.

Idlès is located at an elevation of 1,399 metres (4,590 ft) in the Hoggar mountains of southern Algeria.

Compared to other towns in the Sahara of southern Algeria its summers are less hot and it receives somewhat more precipitation due to its altitude.

Idlès lies just north of the N55 national highway, which leads west to In Amguel and east to Bordj El Houasse.