Ayni (Quechua, also spelled Ayniy or Aini) is a traditional form of mutual help practiced in indigenous communities (ayllu) in the Andes. Ayni means proper relationship. Member of a community help another member for private purposes when support is needed, e.g. in house construction or agricultural works. Another time the family that got support will participate in other ayni work supporting the others. Participants are supplied with food and drink by the hosting family.
See also 
- Mutual Aid
- Barn raising
- Dugnad (Norwegian)
- Meitheal (Irish)
- Minca (Andean)
- Naffir (Sudanese Arabic)
- Talkoot (Finnish)
- Gotong royong (Indonesia and Malaysia)
- Jürgen Golte (1973) "Bauern in Peru" Doctoral Thesis. Freie Universistät Berlin, Gebr. Mann. Berlin
- Carlos Milla Villena (2003) "Ayni. Semiotica de los espacios sagrados. Ley de Reciprocidad." Asociacion Cultural Amaru Wayra, Lima
- Katja Grunow (2009): Credit-scoring in Mikrofinanzinstiutionen. S. 35 ff., Generalisierte und balanzierte Reziprozität (in German).
- Leonora Arriagada Peters (2011) "Andenwissenssystem [...]. El Sistema de Conocimientos Andinos[...]. The Andean knowledge System. Fundamental knowledge and interrelations of the high culture of the Andes" Doctoral Thesis. Freie Universistät Berlin.