Daniel David Ellis (January 6, 1860[1] – 1927[2]) was a physician and political figure in Saskatchewan.
He represented Moosomin in the Legislative Assembly of Saskatchewan from 1905 to 1908 as a Provincial Rights Party member.
He was born in Wallace, Canada West, the son of Elijah Ellis, a native of Ireland, and was educated there, in Listowel and at the University of Toronto.
Ellis served as medical health officer for Stratford, Ontario and was a surgeon for the Perth County militia.
[1] Ellis served as provincial Grand Master for the Orange Lodge in Saskatchewan.