Lemmer is a town in the municipality of De Fryske Marren, in the Dutch province of Friesland. Lemmer lies adjacent to the IJsselmeer and the Frisian Lakes and is one of Friesland's best-known surface water sports locations. Lemmer is a bustling lakeside resort in the summer months and attracts not only day-trippers from surrounding communities such as Emmeloord, Urk, and Joure, but also national and international tourists. In 2017 the town had 10,225 inhabitants.