Barrie—Simcoe—Bradford was a provincial electoral district in central Ontario, Canada that elected one Member of the Legislative Assembly of Ontario.
It was created in 1999 from Simcoe Centre and a small part from Simcoe West.
It was abolished in 2007 into Barrie, Simcoe—Grey and York—Simcoe.
The riding included the municipalities of Barrie, Innisfil and Bradford West Gwillimbury.