Niesky (-German, Sorbian/Polish: Niska) is a small town in Upper Lusatia in eastern the Free State of Saxony, Germany. It has a population of about 11,000 and is part of the district of Görlitz.

The town was founded in 1742 by Moravian immigrants. As members of the Moravian Church, they fled from persecution in their Catholic homeland. The name Niesky is the Germanised version of the Czech word nízký ("low"). In 1776, at the age of 12, Benjamin Henry Boneval Latrobe, future designer of the United States Capitol, as well as of the Baltimore Basilica, was sent to the Moravian School at Niesky.