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Princess Bajrakitiyabha Mahidol: A Life of Service Ends
Thailand's Princess Bajrakitiyabha Mahidol, the 47-year-old eldest daughter of King Maha Vajiralongkorn, has died after nearly four years in a coma, the Royal Palace confirmed on June 11, 2026. The princess, also known as Princess Bha or Princess Pa, had been hospitalized since December 14, 2022, after collapsing due to a heart condition caused by a bacterial infection while training dogs for the Thai military. Her death, attributed to complications including an abdominal infection, cardiac arrhythmia, and blood clotting issues, has plunged the nation into a 15-day official mourning period, with flags at half-mast across Thailand.
Background and Royal Career
Born on December 7, 1978, to King Vajiralongkorn and his first wife, Princess Soamsawali, Bajrakitiyabha was the first grandchild of King Bhumibol Adulyadej and Queen Sirikit. She was the only one of the king's seven children born to his first wife and held the high royal rank of Kromma Luang — Princess Rajasarini Siribajra. Educated at Rajini School, Heathfield School in England, and Chitralada School, she earned an LL.B. from Thammasat University, a B.A. in International Relations from Sukhothai Thammatirat University, and an LL.M. and J.S.D. from Cornell Law School.
Her legal career included work at the Thai Permanent Mission to the UN in New York and as an attorney in the Office of the Attorney General in Bangkok and Udon Thani Province. From 2012 to 2014, she served as Thailand's ambassador to Austria. In 2021, she was appointed Chief of Staff of the King's Close Bodyguard Command with the rank of general. She also served as a UN Goodwill Ambassador for the Office on Drugs and Crime, focusing on drug control and female prisoner rights.
Advocacy for Women in Prison
Princess Bajrakitiyabha was internationally recognized for her work improving conditions for female inmates. She spearheaded the 'Kamlangjai' (Inspire) project, which supports incarcerated women, including pregnant inmates and their babies, to prepare them for reintegration into society. She also played a key role in the UN's adoption of the 'Bangkok Rules' in 2010 — the first global guidelines for the treatment of women in the justice system. The Bangkok Rules for female prisoners remain a landmark in prison reform. Her 'Enhancing Lives of Female Inmates' (ELFI) project further advocated for non-custodial measures for women offenders.
Succession Implications
Bajrakitiyabha's death reshapes Thailand's royal succession landscape. Although she was the eldest child, Thai succession law traditionally favors male heirs. The presumptive heir is now her 21-year-old half-brother, Prince Dipangkorn Rasmijoti, the king's youngest child and only officially recognized son, born to his third wife, Srirasmi Suwadee. However, the prince's position has been subject to speculation due to his parents' divorce in 2014 and reported health issues. Under Thai law, the king may appoint a successor. Many analysts had expected Bajrakitiyabha to serve as a behind-the-scenes advisor to her half-brother, given her experience and diplomatic skills. The Thai royal succession laws remain a sensitive topic under the country's strict lese-majeste legislation, which limits public discussion of the monarchy.
National Mourning and Royal Funeral
Prime Minister Anutin Charnvirakul announced a 15-day official mourning period, with flags at half-mast at government institutions nationwide. In a televised address, he described the princess as 'the pride of Thailand' with a 'moral legacy that will guide future Thai generations.' The king has ordered funeral rites with the highest royal honors at the Grand Palace in Bangkok, where her body will lie in state. Thousands of royal supporters have gathered outside Chulalongkorn Hospital and the Grand Palace to pay respects. This is the second loss for the king in less than a year, following the death of his mother, Queen Sirikit, in October 2025 at age 93. The 2025 death of Queen Sirikit marked a somber period for the royal family.
FAQ
What caused Princess Bajrakitiyabha's death?
The princess died from complications of a long-term illness, including an abdominal infection (colon inflammation), cardiac arrhythmia, and blood clotting problems, after being in a coma since December 2022 following a heart condition caused by a bacterial infection.
Who is the heir to the Thai throne now?
The presumptive heir is Prince Dipangkorn Rasmijoti, the 21-year-old half-brother of the princess. He is the only officially recognized son of King Maha Vajiralongkorn.
What was the princess known for?
She was a Cornell-trained lawyer, diplomat, and UN Goodwill Ambassador. She served as Thailand's ambassador to Austria and was a leading advocate for female prisoner rights, helping to establish the UN's Bangkok Rules for the treatment of women in the justice system.
How long was the princess in a coma?
She was in a coma for approximately three and a half years, from December 14, 2022, until her death on June 11, 2026.
What is the official mourning period in Thailand?
The Thai government declared a 15-day national mourning period, with flags flown at half-mast at all government buildings.
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