Lucan Biddulph is an incorporated township in the Canadian province of Ontario. It was formed on January 1, 1999, by amalgamating the Village of Lucan with Biddulph Township. The township had a population of 4,338 people in the Canada 2011 Census, and covers an area of 168.76 km² of land within Middlesex County.
The land in the area is almost entirely agricultural, with relatively fertile soils used for crops (grains, tobacco) and livestock. Many of the township's residents are employed in the same industries.