Walvis Bay (Dutch/Afrikaans Walvisbaai, German Walfischbucht or Walfischbai, all meaning "Whale Bay"), is a port in Namibia and the bay on which it lies.

The bay has been a haven for sea vessels because of its natural deepwater harbour, protected by the Pelican Point sand spit. Being rich in plankton and marine life, these waters drew large numbers of whales attracting whalers and fishing vessels. The Dutch referred to it as Walvisch Baye and the English as Whale Bay, and in its eventual proclamation it came to be called Walfish Bay, and eventually Walvis Bay. A succession of colonists exploited the location and resources of this strategic harbour settlement. The harbour's value in relation to the sea route around the Cape of Good Hope had caught the attention of world powers since it was discovered. This explains the complicated political status of Walvis Bay down the years.

The town is situated in the Kuiseb river delta and lies at the end of the TransNamib Railway to Windhoek, and on the B2 road.

Walvis Bay, with its large bay and sand dunes, is the tourism activity centre of Namibia. Other attractions include the artificial Bird Island, centre of a guano collection industry, the Dune 7 sand dune, salt works, birdlife and a museum. Kuisebmund Stadium, home to two clubs in the Namibia Premier League, is also located in the city.