Si Wilai (Thai: ศรีวิไล) is subdistrict (tambon) in Si Wilai District, in Bueng Kan Province, northeastern Thailand.

It is the seat of Si Wilai District.

As of 2010, it had a population of 10,846 people and jurisdiction over 12 villages.

[1] It lies on Thailand Route 222, south of Non Sombun and Bueng Kan.[2] A bus service connects it to Bueng Kan.[3]

This Bueng Kan province location article is a stub.