Thong Rajawong Fai Nai or Thong Rajawong Yai Fai Nai is the ‘Flag of the Royal House for Ladies of the Court’.

It is the Standard for princesses of the Chakri dynasty, other than the Royal Consort of the Crown Prince. It consists of a blue field with a yellow circle that features a red Garuda, depicted on a swallow-tailed flag.