The Zambia Association of Sisterhoods is an Ecclesial Organization of pontifical right, which relates to the Congregation for the Institutes of Consecrated Life and Societies of Apostolic Life, (CICLSAL). It was founded in 1958. The membership of ZAS is from religious institutes and societies of apostolic life who formally apply to join the Association.

The Association has a membership of 45 local and international religious congregations with a total number of well over 1,500 sisters who are serving in Zambia. It has eleven (11) administrative branches throughout the country with a well-established elective executive committee.

The Branches of the Association follow the administrative political boundaries of the country. Although the Country is divided into ten (10) provinces, the Catholic Church has eleven (11) dioceses, two of which are Archdioceses.