Neusiedl am See (Austrian German: [ˈnɔʏˌsiːdl̩ am ˈseː] ⓘ; Czech: Nezider; Croatian: Niuzalj;[3] Hungarian: Nezsider; Slovak: Nezider) is a town in Burgenland, Austria, and administrative center of the district of Neusiedl am See.

The first mention of "Sumbotheil" (referring to its right to hold Saturday markets) dates back to 1209.

Neusiedl in 1683 was in the wake of the second Turkish siege, and in 1708 the town was devastated by the Kuruc.

After the end of World War I it was given to Austria in the Treaty of St. Germain and Trianon.

The town is known as the birthplace of the experimental guitarist and composer, Christian Fennesz, also known for his swirling, spatial works and collaboration with Japanese pianist Ryuichi Sakamoto.