Waikawa is a small settlement to the north east of Picton, Marlborough, New Zealand.

[3][4] The New Zealand Ministry for Culture and Heritage gives a translation of "bitter water" for Waikawa.

[5] Waikawa is an important New Zealand tourist destination because its large marina acts as gateway to the Marlborough Sounds and famous treks (hikes) such as the Queen Charlotte Track.

Waikawa Marina hosts 600 yacht berths and 70 individual lock-up boatsheds.

The marina offers a typical range of modern on-site marine services, supplies, and facilities.