The Wikimedia Foundation is founded in St. Petersburg, Florida.

Wikimedia Foundation, Inc. (WMF, also colloquially referred to as Wikimedia) is a 501(c)(3) nonprofit organization headquartered in San Francisco, California, registered as a foundation under US law. It owns and operates the Wikimedia projects.It was established in 2003 by Jimmy Wales as a way to fund Wikipedia and its sibling projects through non-profit means. As of 2021, it employs over 550 staff and contractors, with annual revenues in excess of US$150 million.