Secondary Highway 542, commonly referred to as
Highway 542, is a
secondary highway on
Manitoulin Island in the
Canadian province of
Ontario. It links the township of
Gore Bay to
Tehkummah and
Highway 6. Its total length is approximately . Its western terminus is
Highway 540, and before its eastern terminus is at Highway 6, near Tehkummah, it passes through the small villages of Advance, Long Bay, Britainville, Spring Bay, Dryden's Corner, Monument Corner, Central Manitoulin, Mindemoya, Gibraltar, and Sandfield. Between Dryden's Corner and Mindemoya, Highway 542 is
concurrent with
Highway 551 for approximately . == Highway 542A ==