塞尼是克罗地亚的城镇，位于该国西部，由利卡-塞尼县负责管辖，面积658平方公里，该地区自史前时代有人类居住，每年平均降雨量1,354毫米，2001年人口8,132。

• Official website of the town of Senj
• Official website of the Tourist Board of Senj

Senj (pronounced [sɛ̂ːɲ]) (Italian:Segna, Latin:Senia, German:Zengg) is an old town on the upper Adriatic coast in Croatia, in the foothills of the Mala Kapela and Velebit mountains.

The symbol of the town is the Nehaj Fortress (Croatian:Tvrđava Nehaj) which was completed in 1558. For a time this was the seat of the Uskoks (Italian:Uscocchi), who were Christian refugees from Ottoman Bosnia resettled here to protect the Habsburg borderlands. The Republic of Venice accused the Uskoks of piracy and declared war on them which led to their expulsion following a truce in 1617.