The emblem of the house is composed of the discus (Chakra) and the trident (Trishula), the celestial weapons of the gods Vishnu and Shiva, of whom the Thai sovereign is seen as an incarnation.

The current head of the house is Vajiralongkorn who was proclaimed king on 1 December 2016, but has reigned with retroactive effect since 13 October 2016 after the death of his father Bhumibol Adulyadej.

[2] The present royal family of Thailand belongs to the House of Mahidol (Thai: ราชสกุลมหิดล; RTGS: Ratchasakun Mahidon), a cadet branch of the Chakri dynasty.

The Maha Uparat (มหาอุปราช) or the Krom Phrarajawang Boworn Sathan Mongkol (Vice or Second King of Siam/Viceroy of Siam) (กรมพระราชวังบวรสถานมงคล) was an office that was bestowed on the highest ranking prince, frequently the monarch's younger brother or son.

[3] Krom Phrarajawang Boworn Sathan Phimuk (กรมพระราชวังบวรสถานพิมุข), or the Rear Palace, was another office inherited from the Kingdom of Ayutthaya.

The Crown Prince of Thailand or Sayam Makutrajakuman (สยามมกุฎราชกุมาร) is the designated and heir apparent to the throne and headship of the dynasty.

The title was created in 1886 when King Chulalongkorn appointed his eldest son by Princess Consort Savang Vadhana, Prince Vajirunhis as Sayam Makutrajakuman.