William James Major (November 10, 1881 – August 13, 1953) was a politician in Manitoba, Canada. He served in the Legislative Assembly of Manitoba from 1927 to 1941, and was a prominent cabinet minister in the government of John Bracken.
Major was born in Yeovil, Somerset, England in 1881, He also became active as a freemason.
Major was chosen as a star candidate of the governing Progressive Party in the 1927 provincial election.