Vivadhanajaya (Thai: พระองค์เจ้าวิวัฒนไชย; RTGS: Wiwatthanachai; 29 April 1899 – 22 August 1960) was a Thai prince and government official. He was a grandson of King Mongkut (Rama IV). He served his country as the first Governor of the Bank of Thailand, later as Minister of Finance and as the first Chairman of the board of the Crown Property Bureau.