William Thomas Molloy (July 27, 1940 – July 2, 2019) was a Canadian lawyer, treaty negotiator, and Chancellor of the University of Saskatchewan.
He was the 22nd Lieutenant Governor of Saskatchewan, the viceregal representative of Queen Elizabeth II of Canada in the Province of Saskatchewan.
His appointment as Lieutenant Governor was made by Governor General of Canada Julie Payette on the Constitutional advice of Prime Minister of Canada Justin Trudeau on January 22, 2018, to succeed Vaughn Solomon Schofield.
Molloy was sworn in on March 21, 2018, at the Saskatchewan Legislative Building.