Lucenec (; ; ; ; ) is a town in the Banská Bystrica Region of south-central Slovakia. Historically, it was part, and in the 18th century the capital, of Nógrád County of the Kingdom of Hungary. In 1918, as a result of the Treaty of Trianon, it became a part of Czechoslovakia. The town has a large abandoned synagogue, built in 1924, which served a large Jewish population before World War II.