Izjava o poslanstvu Fundacije Wikimedia opisuje naše trenutne dejavnosti in namen, obseg naših projektov in naše temeljne vrednote. V tem se razlikuje od izjave o viziji. Naša izjava o poslanstvu, razdelana različica tiste v ustanovnem statutu in potrjena s sklepom odbora aprila 2007, je:
The mission of the Wikimedia Foundation is to empower and engage people around the world to collect and develop educational content under a free license or in the public domain, and to disseminate it effectively and globally.
In coordination with a network of individual volunteers and our independent movement organizations, including recognized Chapters, Thematic Organizations, User Groups, and Partners, the Foundation provides the essential infrastructure and an organizational framework for the support and development of multilingual wiki projects and other endeavors which serve this mission. The Foundation will make and keep useful information from its projects available on the Internet free of charge, in perpetuity.
Proposals to change the phrasing of the statement should be made at Mission/Unstable and proposals will be reviewed at least annually (every year).