Princess Bajrakitiyabha Mahidol died on June 11, 2026 [3], after spending more than three years in a coma at Bangkok Hospital [2, 4].

As the eldest daughter of King Maha Vajiralongkorn, the princess was widely seen as a key figure in the Thai monarchy and a potential heir to the throne. Her death marks the end of a long period of uncertainty regarding her health and the future of the royal line.

The princess, known as "Bha," was 47 years old at the time of her death [1]. She first fell into a coma following a cardiac problem that occurred while she was training army dogs [1, 2]. Medical reports said she remained in a comatose state for approximately 41 months [4].

While the initial crisis was cardiac in nature, the prolonged state of unconsciousness led to further medical complications. Reports said that an uncontrolled infection eventually contributed to her death [3, 6].

Princess Bajrakitiyabha was noted for her work with women in prisons, and her professional background in law and diplomacy [5]. Her father, King Maha Vajiralongkorn, is 73 years old [6].

The royal family's announcement follows years of sporadic updates regarding the princess's condition. The public and the government had maintained a hopeful stance while she remained under intensive care in Bangkok [2, 4].

“The princess died after spending more than three years in a coma.”

The death of Princess Bajrakitiyabha removes a high-profile figure from the Thai royal succession. Given her popularity and her role as the King's eldest daughter, her passing may create a vacuum in the royal family's public engagement efforts, particularly regarding the social and legal reforms she championed for marginalized women.