English: Ahidus (Berber languages: ⴰⵃⵉⴷⵓⵙ), also sometimes called ahidous, haidous, tahidoust or hidoussi, is a style of collective performance in Morocco. It is the traditional dance in many Berber tribes and is known to be the favorite entertainment of these tribes.

In the traditional Ahidus performance, singers and dancers, along with men and women standing alternately shoulder to shoulder, form either a large circle or two facing lines.

The man who accompanies and directs the dancers stands in the center of the formation. The performance includes other key people, such as a singer-poet (or ammessad in Berber), assisting singers and drummers.