William Ethelbert Mason (1866 – August 24, 1951) was a businessman and political figure in Saskatchewan, Canada.

[1] He was born in Toronto and came to Regina in 1905 to open a branch of the Canada Permanent Mortgage Corporation.

In 1920, he retired from that job and opened the W. E. Mason Discount Company.

Mason was also head of the Prudential Trust Company.

His daughter, who served as a nurse in England during World War I, died of the Spanish flu.