The Gulf or Bay of Honduras is a large inlet of the Caribbean Sea, indenting the coasts of Belize, Guatemala, and Honduras. From north to south, it runs for approximately 200 km from Dangriga, Belize, to La Ceiba, Honduras.

The inner Gulf of Honduras is lined by the Belize Barrier Reef which forms the southern part of the 900 km long Mesoamerican Barrier Reef System, the second-largest coral reef system in the world. The Belize Barrier Reef includes a number of small islands, called cays, and collectively known as the Pelican Cays.

The Gulf of Honduras is marked by complex dynamics of coastal and open waters, and ocean currents, which have produced a very diverse and unique ecosystem with a wide variety of coastal marine waters, including coastline estuaries, barrier beaches, lagoons, intertidal salt marshes, mangrove forests, seagrass beds, keys and barrier reefs.

The gulf receives the runoff from the watersheds of 12 rivers with an estimated discharge of 1232 m³ s^-1. These rivers include the Moho, Sarstún, Río Dulce, Motagua, and Ulúa. Increased volumes of sediments drained in the Gulf of Honduras pose a threat to its marine ecosystem.

Honduras is a republic in Central America. It was at times referred to as Spanish Honduras to differentiate it from British Honduras, which became the modern-day state of Belize. The country is bordered to the west by Guatemala, to the southwest by El Salvador, to the southeast by Nicaragua, to the south by the Pacific Ocean at the Gulf of Fonseca, and to the north by the Gulf of Honduras, a large inlet of the Caribbean Sea.

Honduras was home to several important indigenous cultures, most notably the Maya. Much of the country was conquered by Spain who introduced its predominant language and many of its customs in the sixteenth century. It became independent in 1821 and has been a republic since the end of Spanish rule.

Its size is just over 112,492 km² with an estimated population of almost eight million. Its capital is Tegucigalpa. Its northern portions are part of the Western Caribbean Zone.

It is notable for its production of minerals, tropical fruit, and recently for exportation of clothing for the international market.