Baie Comeau (bā kōˈmō) [key], town (1991 pop. 26,012), E Que., Canada, on the St. Lawrence River near the mouth of the Manicouagan River. A deepwater sea port, it has hydroelectric plants on the Outardes and Manicouagan rivers that supply Quebec city with electricity. Its manufactures include aluminum and paper products. Brian Mulroney, the prime minister of Canada, was born there.