Kumutoto Bay Campsite is a small DOC backcountry campsite tucked into a sheltered, east-facing bay within Queen Charlotte Sound/Tōtaranui, in the Marlborough region of New Zealand. Access is by boat only, and bookings are required year-round.

The site has four unpowered sites and basic backcountry facilities including a toilet and water supply. The surrounding area offers opportunities for sea-kayaking, boating, water skiing, and fishing. Fires are not permitted at any time.

The campsite sits within Kumutoto Bay Scenic Reserve, and a short walking track leads from the bay, though a section toward the next bay is currently closed due to a slip and windfall damage.