泽门（保加利亚语：Земен；英语：Zemen）是保加利亚西部佩尔尼克州的一个城镇，位于斯特鲁马河岸普切连纳雷塞尔沃伊尔（Pchelina Reservoir）附近，又是泽门市政府的行政中心。

泽门旧称别洛沃，在1925年才改称泽门。泽门这个名称原本只是用在附近的一个铁路站，后来又把这个名称用在这里城镇，以纪念斯特鲁马峡谷泽兰格勒的一所中世纪古堡。15至16世纪的塞尔维亚编年史提及这所古堡在11世纪的以赛亚民间传说里被首次提及。据当地人所述，泽门这名称源自土地一语，意指这个岩石地区里唯一可供耕作的土地。

Zemen (Bulgarian:Земен) is a town in Pernik Province, western Bulgaria. Located near the Pchelina Reservoir on the banks of the Struma River, it is the administrative centre of Zemen Municipality.

The old name of Zemen was Belovo; it was renamed to Zemen in 1925. The new name was initially only given to the railway station nearby, but it was soon carried over to the village itself. The present name commemorates the medieval castle of Zemlangrad, which was located in the Struma gorge in the vicinity of Zemen. The fortress was first mentioned in the 11th-century Tale of Isaiah as ЗЄМЛЬНЬ ГРАД and as ЗЄМЛЪНЬ in a 15th-16th century Serbian chronicle. The toponym is derived from the Bulgarian word for "land" (земя, zemya) and refers, according to the locals, to the only arable land in the rocky surrounding area.