Chaeng Watthana Government Complex (Thai: ศูนย์ราชการแจ้งวัฒนะ), or formally, the Government Complex Commemorating His Majesty the King's 80th Birthday Anniversary, 5 December, BE 2550 (2007) (Thai: ศูนย์ราชการเฉลิมพระเกียรติ 80 พรรษา 5 ธันวาคม 2550), is a complex of Thai Government buildings on Chaeng Watthana Road, Thung Song Hong Subdistrict, Lak Si District, Bangkok.

The complex was built in commemoration of King Bhumibol Adulyadej's 80th birthday.

The complex construction project started in 2005 under Thaksin Shinawatra's regime and was completed in 2008.

[1] The 349 rai (55.8 ha; 138 acres)[1] of land on which the complex sits belongs to the Treasury Department, Ministry of Finance.

[3] The complex is administered by Dhanarak Asset Development (ธนารักษ์พัฒนาสินทรัพย์) or DAD, a state enterprise attached to the Treasury Department.