Nieuwe Willemshaven is a revitalized harbor district in Harlingen, Friesland, situated along the Nieuwe Voorhaven and serving as both a working port and a cultural destination.

It blends nautical heritage with contemporary industry, drawing visitors with an eclectic mix of historic vessels, unique accommodations, and local food and drink.

Highlights include the red lightship Jenni Baynton , traditional shipbuilding associated with the Willem Barentsz, overnight stays aboard a converted hopper or harbour crane, and the Brouwdok brewery.

The area is also developing as a cruise port and marina, functioning as a gateway to the UNESCO World Heritage Wadden Sea. At the harbor's entrance, the Zuiderpier offers a waterfront promenade with views over the Wadden Sea and the Harlingen skyline.