Asdang Dejavudh, Prince of Nakhon Ratchasima (Thai: อัษฎางค์เดชาวุธ; RTGS: Atsadang Dechawut, 12 May 1889 – 9 February 1925) was a son of King Chulalongkorn and Queen Saovabha Phongsri of Siam.

Prince Asdang Dejavudh was born on 12 May 1889 to King Chulalongkorn and Queen Saovabha Phongsri.

For that reason, Chulalongkorn brought Asdang Dejavudh to the island of Ko Sichang off the coast of modern-day Chonburi province.

[2] To celebrate his son's recovery, Chulalongkorn built the Asdang Bridge near the Phra Chuthathut Palace on the island.

[5] After the death of his older half-brother, Prince Chakrabongse Bhuvanath in 1920, he became the heir presumptive to his brother King Vajiravudh.