| Chaiyasit Shinawatra | |
| Native Name: | ชัยสิทธิ์ ชินวัตร |
| Native Name Lang: | th |
| Nickname: | Tui |
| Birth Date: | 25 June 1945 |
| Birth Place: | Bangkok, Thailand |
| Allegiance: |  Thailand |
| Serviceyears: | 1969–2005 |
| Rank: | General 10px Admiral 10px Air Chief Marshal[1] |
| Alma Mater: | Chulachomklao Royal Military Academy |
| Spouse: | Wina Suksapha |
| Children: | 2 |
Chaiyasit Shinawatra (th|ชัยสิทธิ์ ชินวัตร; ; born 25 June 1945) is a former commander-in-chief of the Royal Thai Army.[2]
He was transferred from the army to become a special advisor to the Supreme Command Headquarters under the administration of Prime Minister Chuan Leekpai.[3] In August 2001, Chaiyasit was promoted to deputy commander of the Armed Forces Development Command.[4] In August 2002, he was promoted to the post of deputy commander-in-chief.
As a cousin of Prime Minister Thaksin Shinawatra, his unexpected appointment was criticised as an act of nepotism. Both Chaiyasit and the Defence Minister, General Chavalit Yongchaiyudh, denied accusations of nepotism: "If I'm appointed to a significant post in the Army because of my connection with the prime minister, I won't have any friends left in the armed forces," said Chaiyasit. He said that Thaksin would not interfere with any high-level military reshuffles: "It's a shame that the prime minister's name was tainted by such a groundless rumour."[5]
He replaced General Surayud Chulanont, who was promoted to become supreme commander of the Royal Thai Armed Forces, as commander-in-chief in August 2003.[6]
He was replaced as army chief in 2004, succeeded by Prawit Wongsuwan,[7]