Coordinates: 23°46′58″N 120°27′18″E / 23.782674°N 120.455105°E
Xiluo Township or Siluo Township (Chinese: 西螺鎮; Hanyu Pinyin: Xīluó Zhèn; Tongyong Pinyin: Siluó Jhèn; Wade–Giles: Hsi1-lo2 Chen4) is an urban township in Yunlin County, Taiwan.
Formerly called Lethng (Chinese: 螺湯; Pe̍h-ōe-jī: Lê-thng).
It has a population total of 47,187 and an area of 49.7985 square kilometres.
The township comprises 27 villages: Anding, Beitou, Daxin, Dayuan, Dingnan, Futian, Fuxing, Gongguan, Guangfu, Guanghua, Guangxing, Hanguang, Henan, Jiulong, Luchang, Qizuo, Tungxing, Wucuo, Xianan, Xinan, Xinfeng, Yongan, Zhaoan, Zhengxing, Zhenxing, Zhonghe and Zhongxing.