Tantalus Landing Marine Site is a free BC Marine Recreation Site on the western shore of Howe Sound, roughly 5–7 kilometres by water from Squamish Harbour.

It is the northernmost campsite on the Sea to Sky Marine Trail, developed through volunteer efforts by the Sea Kayak Association of BC and BC Marine Trails.

The site is set against a rock face at its southern end, with a boat run through large boulders accessible at most tide levels.

A trail crosses the hillside past aluminum food caches, spanning a log bridge over a year-round creek that cascades down the mountainside through a series of waterfalls and pools.

Camping options include a level clearing with room for three or four tents, additional tent platforms along the north shore of the bay, and a small benchland reached by a wooden staircase.