Sue Gardner is a Canadian journalist, not-for-profit executive and business executive. She was the executive director of the Wikimedia Foundation from December 2007 until May 2014, and before that was the director of the Canadian Broadcasting Corporation's website and online news outlets.

The Wikimedia Foundation, Inc., abbreviated WMF, is an American 501(c)(3) nonprofit organization headquartered in San Francisco, California, and registered there as a charitable foundation. It is the host of Wikipedia, the seventh most visited website in the world. In addition, the foundation hosts 14 other related content projects. It supports the development of MediaWiki, the wiki software that underpins them all.