Surin, town, east-central Thailand. The town is located on the railway between Nakhon Ratchasima and Ubon Ratchathani and is a trade and production centre for rice, lacquerware, and silk. It has an agricultural college and attracts tourists with its annual Elephant Round-Up. The town lies about 35 miles (56 km) north of the border with Cambodia, and many of its residents speak the Khmer language. Pop. (2000) 41,582.