Lucan Biddulph is an incorporated township in southwestern Ontario, Canada. It was formed on January 1, 1999, by amalgamating the Village of Lucan with Biddulph Township. The township had a population of 4,700 people in the Canada 2016 Census, up 8.3% from 4,388 people in 2011, and covers an area of 169.14 km² of land within Middlesex County.