The year 1925 was the 143rd year of the
Rattanakosin Kingdom of Siam (now known as
Thailand). It was the sixteenth and last year in the reign of King
Vajiravudh (Rama VI) and first year in the reign of King
Prajadhipok (Rama VII), and is reckoned as years 2467 (1 January – 31 March) and 2468 (1 April – 31 December) in the
Buddhist Era.
26 November – King Vajiravudh dies at the age of 44. He was succeeded by his younger brother and King
Chulalongkorn's youngest son Prince
Prajadhipok Sakdidej, the Prince of Sukhothai, who became Rama VII.