William L. Downing

William Lansing Downing (born August 1, 1949) is a former judge of the Superior Court of Washington for King County (Seattle) and a former deputy prosecutor. He is notable for his ruling that same-sex marriages are legal in Washington, as well as for the prosecutions of the Wah Mee massacre killers.

In 1978, he graduated with a J.D. from the University of Washington School of Law, along with classmate Robert S. Lasnik.