Sulphur Passage Provincial Park is a provincial park in British Columbia, Canada, located in the central part of the Clayoquot Sound region of the West Coast of Vancouver Island, British Columbia, Canada. It is located around Obstruction Island to the northeast of Flores Island. The eponymous Sulphur Passage is located on the east side Obstruction Island.

• Clayoquot Sound Biosphere Reserve

• "Sulphur Passage Park". BC Geographical Names.
• "Sulphur Passage". BC Geographical Names.