| Honorific-Prefix: | Police General |
| Chidchai Vanasatidya | |
| Native Name: | ชิดชัย วรรณสถิตย์ |
| Native Name Lang: | th |
| Office: | Acting Prime Minister of Thailand |
| Term Start: | 5 April 2006 |
| Term End: | 23 May 2006 |
| Primeminister: | Thaksin Shinawatra |
| Office1: | Deputy Prime Minister of Thailand |
| Primeminister1: | Thaksin Shinawatra |
| Term Start1: | 11 March 2005 |
| Term End1: | 19 September 2006 |
| Office2: | Minister of Justice |
| Primeminister2: | Thaksin Shinawatra |
| Term Start2: | 2 August 2005 |
| Term End2: | 19 September 2006 |
| Predecessor2: | Suwat Liptapanlop |
| Successor2: | Charnchai Likitjittha |
| Office3: | Minister of Interior |
| Primeminister3: | Thaksin Shinawatra |
| Term Start3: | 11 March 2005 |
| Term End3: | 2 August 2005 |
| Predecessor3: | Phokin Polkul |
| Successor3: | Kongsak Wantana |
| Birth Date: | 13 August 1946 |
| Birth Place: | Ubon Ratchathani, Siam |
| Party: | Pheu Thai (2009–present) |
| Otherparty: | Thai Rak Thai (1999–2007) |
| Spouse: | Atchara Wannasathit |
| Allegiance: |  Thailand |
Police General Chitchai Wannasathit (th|ชิดชัย วรรณสถิตย์, pronounced as /th/; ;[1] born 13 August 1946 in Ubon Ratchathani Province) was the caretaker prime minister of Thailand from April to May 2006, when Thaksin Shinawatra took a break from his duties as prime minister following a disappointing showing in elections. Thaksin returned to his duties after more than a month. Chitchai Wannasathit was simultaneously the first deputy prime minister and justice minister. On 19 September 2006, he was arrested by the Thai military during the 2006 coup d'état, but was soon released.
He was of Chinese descent.[2] [3]