Gulf of Burgas or Burgas Bay (Bulgarian: Бургаски залив, Burgaski zaliv) between the coastline and the straight line joining Cape Emine and Cape Maslen nos[1] is the largest bay of the Bulgarian Black Sea Coast and one of the largest in the Black Sea.

It is 41 km at its widest and 25 m at its deepest, reaching 31 km at its greatest innermost extent,[2] approximately where the Bulgarian city and major port of Burgas is located.

The Burgas Bay is the Black Sea's westernmost point.

While the northern coast is lower and has two big peninsulas, at Nesebar and Pomorie, the southern part of the bay is rougher, with many little inlets and headlands.

The water's salinity in the bay is 17‰; the sand is of magnetite origin.