The Bay of Gdańsk (also known as the Gdańsk Bay or Gulf of Gdańsk; in Polish Zatoka Gdańska; in Kashubian/Pomeranian Gduńskô Hôwinga; in German Danziger Bucht) is a southeastern bay of the Baltic sea.

The western part of Gdańsk Bay is formed by the shallow waters of the Bay of Puck. The southeastern part is the Vistula Lagoon, separated by the Vistula Spit and connected to the open sea by the Strait of Baltiysk.

The bay is enclosed by a large curve of the shores of Gdańsk Pomerania in Poland (Cape Rozewie, Hel Peninsula) and the Kaliningrad Oblast of Russia (Sambian peninsula). The coast of the bay features two very long sandspits, the Hel peninsula and the Vistula Spit. The first one defines the Bay of Puck, the latter one defines the Vistula Lagoon.

The maximum depth is 120 m, salinity 0.7 per cent.

The major ports and coastal cities are Kaliningrad, Gdańsk, Gdynia, Puck, Sopot, Pilawa, Hel, Primorsk, and Baltiysk.

Main rivers: the Pregolya and the Vistula. The Bay of Gdańsk receives the waters of the Vistula directly via three branches -- the Leniwka, the Śmiała Wisła, and the Martwa Wisła -- and indirectly via the Vistula Lagoon with 2 branches: the Nogat and the Szkarpawa.

Gdańsk | Baltic Sea | Bays of Poland

Danziger Bucht | Gduńskô Hôwinga | Bocht van Gdansk | Zatoka Gdańska