MV Mill Bay was a Canadian ferry. At 37.49 metres (123 ft) long, it was BC Ferries' second smallest ship. It holds 16 vehicles (tied with the MV Nimpkish), 138 passengers and crew, and its maximum speed is 9 knots (17 km/h). The Mill Bay operated in the Brentwood Bay-Mill Bay route across Saanich Inlet on Vancouver Island.