Mangarin Bay is a bay of the South China Sea, on the west coast of Mindoro island, in Occidental Mindoro Province of the Philippines.

[1] The bay is shoal, and sheltered from the wind by Mangarin Point to the east and by Ilin Island.

[1] Magarin Point terminates in a long sandy pit off which the depth is 4 to 5 fathoms.

The settlement of Mangarin is only accessible by light boat.

This article about a location in Mimaropa region is a stub.