Rambai Barni
| 
 | |
|---|---|
| Queen Rambai Barni in 1925 | |
| Queen consort of Siam | |
| Tenure | 25 November 1925 – 2 March 1935 | 
| Coronation | 25 February 1926 | 
| Born | Rambai Barni Svastivatana 20 December 1904 Bangkok, Siam | 
| Died | 22 May 1984 (aged 79) Bangkok, Thailand | 
| Burial | 9 April 1985 Royal Crematorium, Sanam Luang, Bangkok | 
| Spouse | |
| House | Svastivatana (Chakri dynasty) | 
| Father | Svasti Sobhana | 
| Mother | Abha Barni Gagananga | 
| Religion | Theravada Buddhism | 
| Signature | |
Rambai Barni (Thai: รำไพพรรณี, RTGS: Ramphaiphanni, pronounced [rām.pʰāj.pʰān.nīː]), formerly Rambai Barni Svastivatana (Thai: รำไพพรรณี สวัสดิวัตน์, RTGS: Ramphaiphanni Sawatdiwat; born 20 December 1904 – 22 May 1984), was Queen of Siam as the wife of King Prajadhipok of Siam.