Holwerd is a village in the northern Netherlands, in the province of Friesland. Wadloopcentrum Fryslân in Holwerd is a center for the training of wadlopen guides and the preservation of the sport. It was the birthplace of astronomer Johannes Phocylides Holwarda. Holwerd had a station on the North Friesland Railway, which opened in 1901 and closed to passengers in May 1935. It closed completely in July 1942. The ferry to Ameland departs from Holwerd.