| Gulf of Boni/Bone | |
| Location: | Sulawesi |
| Pushpin Map: | Indonesia Sulawesi |
| Coords: | -4°N 165°W |
| Countries: | Indonesia |
The Gulf of Boni (Indonesian: Teluk Bone), also known as the Gulf of Bone, Bay of Boni, and Bone Bay, is the gulf which divides the South and Southeast Peninsulas of the island of Sulawesi (Celebes) in Indonesia. It opens on the south into the Banda Sea.
The International Hydrographic Organization (IHO) defines the Gulf of Boni (or Bone) as being one of the divisions of the East Indian Archipelago. It is defined as the waters north of the "line from Tanjung Lassa, Celebes, to the North point of Kabaena Island (-5.0833°N 173°W) and thence up this meridian to the coast of Celebes".