BANGKOK – Thailand’s Bureau of the Royal Household has confirmed the passing of Princess Bajrakitiyabha Mahidob, the eldest child of King Maha Vajiralongkorn and a prominent advocate for justice reform, at the age of 47. The royal announcement, released Friday, states that the princess died Thursday evening at a Bangkok hospital, where she had received continuous medical care since collapsing from an unexpected illness three years prior.
Born in December 1978, when her father still held the title of crown prince, Princess Bajrakitiyabha built a long professional career rooted in law and public service. After completing undergraduate legal studies at Thailand’s top Thammasat University, she pursued advanced degrees at Cornell University Law School in the United States, earning a master’s in 2002 and a doctorate in 2005. Her doctoral research centered on protecting the legal rights of accused individuals, laying the foundation for her lifelong work in criminal justice reform. In recognition of her contributions, academic institutions later established Cornell Law School scholarships and a Thai-U.S. legal scholar exchange program in her name.
Following a short stint at Thailand’s permanent mission to the United Nations in New York, Princess Bajrakitiyabha returned to her home country to work as a public prosecutor. She later returned to diplomatic service, serving as Thailand’s ambassador to Austria between 2012 and 2014, before stepping back from diplomatic roles to refocus on domestic justice initiatives. In 2017, the United Nations Office on Drugs and Crime named her a global goodwill ambassador, and she also took on an honorary role advocating to end gender-based violence and improve outcomes for women caught up in the criminal justice system.
Her most enduring legacy is the Kamlangjai or “Inspire” project, a groundbreaking initiative designed to support the rehabilitation and reintegration of incarcerated Thai women into society after release. Her advocacy on this front ultimately pushed the United Nations General Assembly to adopt the landmark “Bangkok Rules,” a global framework outlining standards for the treatment and care of female prisoners. In a 2013 interview with the Associated Press, the princess emphasized her core belief that equitable justice and the rule of law are foundational to national progress. “Society cannot grow if there is instability and injustice,” she said. “Without the rule of law, without a good justice system, it’s always chaos. I think the rule of law is a very important pillar to development, to economic growth, and of course to human rights.”
Princess Bajrakitiyabha first fell ill in December 2022, when she lost consciousness while training dogs for a royal army exhibition. The palace later confirmed she had contracted a mycoplasma infection, a bacterial illness most commonly linked to pneumonia, that required immediate hospitalization. Limited official updates on her condition in the years following her admission fueled widespread concern among the Thai public. The 2023 royal New Year greeting card, which showed King Maha Vajiralongkorn and Queen Sithida dressed in formal black attire, was widely interpreted by Thais as a signal that her health was severely declining, and subsequent statements confirmed a gradual deterioration of her condition.
As the king’s eldest child, Princess Bajrakitiyabha’s decades of public service sparked widespread speculation about her potential future role in Thailand’s monarchy. Under current Thai succession rules, male heirs hold priority, making her younger half-brother Prince Dipangkorn Rasmijoti the current presumptive heir to the throne. Even so, many political analysts and royal observers long believed that her extensive experience in public affairs positioned her to take on a key role in future royal leadership, potentially serving as regent if the young prince ascended the throne early.
Princess Bajrakitiyabha is survived by her father King Maha Vajiralongkorn, her mother Princess Soamsawali, and her siblings.