Joseph Henry Widdifield (June 12, 1845 – June 3, 1906) was an Ontario physician and political figure. He represented York North in the Legislative Assembly of Ontario as a Liberal member from 1875 to 1888.He was born in Whitchurch, Upper Canada in 1812, the son of Charles Ellis Widdifield, and studied medicine at Victoria College and St Thomas's Hospital Medical School in London. On his return to Canada, Widdifield set up practice in Newmarket.