Five horizontal stripes of red, white, blue, white and red, the middle stripe twice as wide as the others. The flag colors were officially standardized in 2017.
King's Standard in ratio 2:3 with swallow-tailed end.
1979–
Standard for Senior members of the royal family (created for the Princess Mother)
Queen's Standard in ratio 2:3 with swallow-tailed end. The blue middle square depicts the Royal Crown atop two bowls on a table flanked by two five-tiered royal umbrellas.
Dark blue rectangle with the ratio of 2:3 defaced with the Royal Standard. The flag is swallow-tail and has the royal monogram of Princess Maha Chakri Sirindhorn at the canton.[1]
Dark blue rectangle defaced with yellow circle. The circle features the red Garuda. At the canton of the blue field has the royal monogram of Princess Chulabhorn Walailak. The flag is swallow-tail[1]
1911–
Standard for the Royal Consort of the Crown Prince of Thailand.
Blue 2:3 rectangle defaced with King's Standard. The flag is swallow-tailed.
Yellow flag (the King's birthday colour), the middle the depicts the Royal Cypher (ว.ป.ร.: มหาวชิราลงกรณ ปรมราชาธิราช : Mahavajiralongkorn Paramarajadhiraja (Thai equivalent to Vajiralongkorn Rex), topped by the Great Crown of Victory, in between is the Thai numeral of 10.
Blue flag (the Queen's birthday colour), the middle the depicts the Royal Cypher (ส.ก.: สิริกิติ์ : Sirikit), the middle is Queen Sirikit's Royal Cypher, topped by the Great Crown of Victory.
Purple flag (the Queen's birthday colour), the middle the depicts the Royal Cypher (ส.ท.: สุทิดา : Suthida), the middle is Queen Suthida's Royal Cypher, topped by the Great Crown of Victory.
Purple flag (the Princess' birthday colour), the middle the depicts the Royal Cypher (ส.ธ.: สิรินธร : Sirindhorn), the middle is the Royal Cypher, topped by the simplified crown.
Orange flag (the Princess' birthday colour), the middle the depicts the Royal Cypher (จ.ภ.: จุฬาภรณวลัยลักษณ์ : Chulabhorn), the middle is the Royal Cypher, topped by the simplified crown.
Red flag (the Princess' birthday colour), the middle the depicts the Royal Cypher (อ.ร.: อุบลรัตนราชกัญญา : Ubolratana), the middle is the Royal Cypher, but not topped by the simplified crown.
Purple flag (the Princess' birthday colour), the middle the depicts the Royal Cypher (ส.ส.: โสมสวลี : Soamsawali), the middle is the Royal Cypher, under the Buddhist/Hindu sacred sign of "Unalome".
Orange flag (the Princess' birthday colour), the middle the depicts the Royal Cypher (พ.ภ.: พัชรกิติยาภา : Bajrakitiyabha), the middle is the Royal Cypher, topped by the simplified crown.
Orange flag (the Princess' birthday colour), the middle the depicts the Royal Cypher (ส.ร.: สิริวัณณวรีนารีรัตน์ : Sirivannavari), the middle is the Royal Cypher, topped by the simplified crown.
Blue flag (the Prince's birthday colour), the middle the depicts the Royal Cypher (ท.ป.: ทีปังกรรัศมีโชติ : Dipangkorn), the middle is the Royal Cypher, topped by the simplified crown.
Blue flag (the Princess' birthday colour), the middle the depicts the Royal Cypher (ส.ภ.: สิริภาจุฑาภรณ์ : Siribhachudabhorn), the middle is the Royal Cypher, topped by the glowing tiara.
Purple flag (the Princess' birthday colour), the middle the depicts the Royal Cypher (อ.ก.: อทิตยาทรกิติคุณ : Aditayadornkitikhun), the middle is the Royal Cypher.
White flag in ratio 5:6 with the Emblem of the Ministry of Defence in the center. The emblem consists of a red chakra (Army), the dark blue anchor (Navy) and the sky blue wings (Air Force).
A national flag with the emblem of Royal Thai Navy in the center: a chakra inserted with an anchor under the Thai royal crown. The design is identical to Thai naval unit colours. Note that all Thai Army, Navy and Air Force unit colours called "Thong Chai Chalermphol" (th (ธงชัยเฉลิมพล)).
Red, Navy blue and Sky blue flag with the emblem of Royal Thai Armed Forces: at the center of the tricolour is a badge of the Headquarters with a golden Chakra, with an anchor with golden chains and golden Wings, surrounded by a golden wreath. (from Flag law B.E.2522 (1979)).
Red flag with the emblem of Royal Thai Army: a chakra under Unalom and the Thai royal crown with rays flanked by the wreaths (from Flag law B.E.2522 (1979)).
Yellow flag in the ratio of 2:3, with dark yellow borders and an emblem depicting an escutcheon depicting the National flag, behind are a pair of wings, topped by the Great Crown of Victory, with blue rays and a white Aum/ Rama IX Monument
Maroon red flag with the emblem of the Thai National Police in the center.
1979–
Pitak Santiraj flag
An honour flag of the Royal Thai Police according to the Thai Flag Act of B.E. 2522 (1979). It has the same characteristics and colors as the National Flag but in the centre of the flag is the coat of arms of Siam during the reign of King Chulalongkorn (Rama V), with the words "To Protect the People's Peace" (พิทักษ์สันติราษฎร์ – pronounce "Pitak Santiraj") embroidered in silver metallic threads embracing the underside of the coat of arms.
Green flag with the Seal of the Bangkok Metropolitan, in white at the center. Used by the Bangkok Metropolitan Administration and the Governor of Bangkok.
A white elephant facing to the hoist in the red flag. Called in Thai language "Thong Chang Phueak" (ธงช้างเผือก)[2] (the white elephant flag). Commonly attributed to Rama IV's reign but was first implemented during the reign of Rama III.[3]
1916–1917
State flag and ensign of Siam
Red flag with a white elephant in regalia.
1917
Former flag of Siam
Five horizontal stripes flag like the Trairanga with the only major difference being that the middle stripe is red. It is currently used by several anti-monarchists due to its omission of the colour blue which symbolizes the monarchy.
Triranga defaced with a red disc containing dressed white elephant, facing a flagpole. Briefly, its appearance is the same as naval ensign, but both red banners of the flag contains a stanza from a Buddhist chant in Pali (the Jayamangala Gatha), written in Thai script: "พาหุํสหัส์สมภินิม์มิตสาวุธัน์ตํ ค๎รีเมขลํอุทิตโฆรสเสนมารํ ทานาทิธัม์มวิธินาชิตวามุนิน์โท ตัน์เตชสาภวตุเมชยสิทธินิจ์จํ".
Triranga defaced with a red disc containing King Vajiravudh's personal emblem. The emblem features Thai acronym "ร.ร." and Thai digit six ("๖"), both are displayed under the glowing crown. Both red banners of the flag contains the same chant in Thai script as the obverse.
Diplomatic flags
Flag
Date
Use
Description
1873–1912
Ambassadorial Standard of Siam
State flag with the crowned arms of Siam at its canton.
Consular Flag of Siam
State flag with the escutcheon of Siam at its canton.
1912–1917
Ambassadorial Standard of Siam
State flag with blue circle at its canton. The circle contains Garuda holding crown.
Consular Flag of Siam
State flag with blue circle at its canton. The circle contains Garuda with outstretched wings.
1917–1927
Ambassadorial Standard and Consular Flag of Siam
Triranga surmounted with white elephant, facing a pole.