Bongoyo Island (or simply Bongoyo) is an uninhabited island in Tanzania, situated 2.5km north of the country's largest city, Dar es Salaam.
It is the most frequently visited of the four islands of the Dar es Salaam Marine Reserve (DMRS) and a popular day trip for both tourists and Tanzanian residents alike for snorkeling and sunbathing.
The Island has a very rocky shore and only two beaches.
All visitors visit the beach at the northwestern tip of the Island, where the boats moor and where there are huts, drinks and food.
The Island lies close to the Msasani Peninsula (in the Kinondoni district of the city) and is reachable by means of a 30-minute boat ride from the mainland.