William L. Sauder, OC, OBC (May 27, 1926 – December 19, 2007) was a Canadian businessman and philanthropist.
Sauder graduated from the University of British Columbia, where he was a member of the Phi Delta Theta fraternity, in 1948 with a Bachelor of Commerce degree, and later returned to the university as a member of the Board of Governors.
He was ultimately appointed chair of the board, and was later elected Chancellor, a position he held from 1996 to 2002.
On June 5, 2003, Sauder donated a $20 million endowment and the University of British Columbia's Faculty of Commerce and Business Administration which was subsequently renamed the Sauder School of Business.
His gift of $20 million was the largest single private donation ever made to a Canadian business school at the time.