Mozilla基金会（英语：Mozilla Foundation）是为支持和领导开放源代码专案而设立的一个非营利组织。该组织制定管理开发政策，经营关键基础组织和管理商标及知识产权。它拥有一个子公司：Mozilla公司，用来雇用一些开发人员协调Mozilla Firefox网页浏览器和Mozilla Thunderbird电子邮件客户端的发行版。Mozilla基金会总部位于美国加州的山景城。

Mozilla基金会把自己描述为“一个致力于在互联网领域提供多样化选择和创新的公益组织”。在Mozilla基金会所遵循的Mozilla宣言当中，其中列出了10条原则，涵盖认为对全民及商业活动有益的互联网发展重要方针。

The Mozilla Foundation is a non-profit organization that exists to support and collectively lead the open source Mozilla project. Founded in July 2003, the organization sets the policies that govern development, operates key infrastructure and controls Mozilla trademarks and copyrights. It owns a taxable subsidiary: the Mozilla Corporation, which employs many Mozilla developers and coordinates releases of the Mozilla Firefox web browser and Mozilla Thunderbird email client. The subsidiary is 100% owned by the parent, and therefore follows the same non-profit principles. The Mozilla Foundation was founded by the Netscape-affiliated Mozilla Organization. The organization is currently based in the Silicon Valley city of Mountain View, California, United States.