Joseph Daniel Nault (August 19, 1888–1954) was an Ontario political figure. He represented Russell in the Legislative Assembly of Ontario as a Progressive Conservative from 1948 to 1954.
He was born in Ottawa in 1888, the son of Georges Nault. In 1912, he married Alice Charlebois; in 1924, he married Antonia Parisien after the death of his first wife. Nault died in office in 1954.