Maurice Riel, PC QC (April 3, 1922 – July 20, 2007) was a Canadian lawyer and Senator.
Establishing his own law firm in Montreal with Louis-René Beaudoin under the name Beaudoin, Riel Geoffrion & Vermette, Riel worked in international law with a number of clients in France.
He was appointed Queen's Counsel in 1958, and served as chairman of the Metropolitan Montreal Corporation from 1965 to 1969.
He was appointed to the Senate on the advice of Prime Minister Pierre Trudeau in 1973, and worked on immigration policy and foreign affairs amongst other issues.
He was appointed Speaker of the Senate of Canada on December 16, 1983, but served for less than a year in that position due to the Progressive Conservative Party's victory in the 1984 general election.