The Mass Public Opinion Institute (MPOI) is a non-profit, non-governmental research organization established and registered in January 1999 as a "Trust" in accordance with the laws of the Republic of Zimbabwe to undertake, publish, and discuss public opinion research.

The Institute’s main objective is to gauge public opinion on topical issues of governance and public concern and make this known to policy makers and implementers and to the public itself. Its ultimate aim thus is to promote and strengthen democratic governance through research, publishing and facilitating discussion of public opinion on topical issues.  The Institute believes that public policy should be informed by public opinion. MPOI seeks to ensure that good governance prospers where policymakers are informed by public opinion, and when citizens are constantly asked to express their views.

Part of MPOI’s mission is to ensure that public opinion surveys are a permanent feature in the conduct of public affairs, with people encouraged to voice their opinions on issues that concern them. To this end, MPOI seeks to become a permanent organization that promotes and encourages the institutionalization of democracy in Zimbabwe.

The Mass Public Opinion Institute is Afrobarometer’s national partner in Zimbabwe. The organization has been doing research for top agencies, NGOs, private and public institutions for more than a decade. The institute is headed by a non-salaried Board of Trustees, consisting of at least seven members drawn from various fields and backgrounds both within the public and private sector.