Royal Standard of Thailand

The present form was adopted in 1910 under Vajiravudh (Rama VI), superseding the first Royal Standard created by Mongkut in 1855.

[1] The standards are usually hoisted at the King's palace of residence, sea or land vehicles and as an emblem on the side of the royal aircraft.

The standard featured a red rectangular flag with a smaller dark blue rectangle inside.

Within the dark blue rectangle depicts the Great Crown of Victory on a stand flanked by two seven-tiered Royal Umbrellas.

The Crown itself is derived from the King's personal seal, which in itself is a canting of both his given name and ceremonial name: Mongkut (มงกุฎ) and Chom Klao (จอมเกล้า) both meaning 'Crown' in Thai.

The Royal Standard was changed by adding the new Arms of Dominion, which is a golden shield divided into three parts.

Royal Standard at the Grand Palace .
King Mongkut's Privy seal.
'Thong Chom Klao' (ธงจอมเกล้า), Standard of King Mongkut
'Thong Airapot' (ธงไอยราพต), 'Absence' standard (used when the King is not in residence).
'Thong Boromrajathawat Maha Siaminthra' (ธงบรมราชธวัชมหาสยามินทร์), the King;'s standard in 1891–1897.
'Thong Maharat' (ธงมหาราช), the King's standard in 1897–1910.
'Thong Chudhathipathai' (ธงจุฑาธิปไตย), 'Absence' standard, with the Royal Cypher of King Rama V
King Rama V's royal cypher "จ ป ร," topped by the royal coronet.