Ubol Ratana

Princess Ubol Ratana is a Thai royal figure, politician, and former swimmer who became the first member of the modern Thai monarchy to voluntarily relinquish her title for marriage. Born the eldest daughter of King Bhumibol Adulyadej and Queen Sirikit, she holds a unique place in history as the only royal sibling to have lived as a commoner in the United States for over two decades before returning to Thailand. Her life diverged sharply from traditional royal expectations when she married American Peter Ladd Jensen in 1972, an act that required her to give up her "Her Royal Highness" style.

In recent years, she has re-emerged as a public figure through philanthropy and a brief, high-profile political campaign. In February 2019, she announced her candidacy for Prime Minister of Thailand under the Thai Raksa Chart Party, marking an unprecedented attempt by a royal family member to enter electoral politics. Although her bid was quickly disqualified following opposition from her brother, King Vajiralongkorn, the event cemented her reputation as a progressive and unconventional figure within the conservative institution of the Thai monarchy. [edit]

Princess Ubol Ratana spent her earliest years in Switzerland before her family relocated to Thailand. Her upbringing combined strict royal protocol with a Western education that set her apart from many of her contemporaries. She attended the University of California, Berkeley, where she immersed herself in American culture and academics. Her intellectual pursuits continued at the Massachusetts Institute of Technology, where she earned a Master's degree in Biochemistry, demonstrating a sharp mind well beyond the ceremonial duties expected of royalty.

Before entering the public eye as a political candidate or cultural ambassador, she established herself as a competitive athlete. In 1967, she competed in the Southeast Asian Games held in Bangkok and secured a gold medal in swimming. This athletic achievement highlighted her physical prowess and dedication during her formative years. The decision to marry American Peter Ladd Jensen while studying in the United States marked the beginning of a radical shift in her life trajectory. Their wedding on December 24, 1972, triggered a constitutional requirement forcing her to renounce her royal status. She moved to the US, adopting the surname Jensen and living as a private citizen for twenty-six years. During this time, she raised two children and built a life far removed from the opulence of the Grand Palace. [edit]

Ubol Ratana's career path is defined by distinct phases rather than a single industry trajectory. Her early success came in sports with a gold medal at the 1967 SEA Games. After her divorce in 1998, she returned to Thailand permanently in 2001, resuming her role within the royal family. While styled as Princess Ubol Ratana, she lacked the full ceremonial privileges of a reigning monarch's daughter who had not married a commoner. She focused heavily on philanthropy, establishing foundations dedicated to social welfare, anti-drug campaigns, and education.

The most significant moment in her professional life occurred in February 2019 when she launched a campaign for Prime Minister. Supported by the Thai Raksa Chart Party, her announcement generated massive global media attention. However, the Election Commission of Thailand disqualified her candidacy just days later after King Vajiralongkorn stated that her participation was inappropriate. Despite this setback, she remained active in public life. In May 2026, she opened "Thai Night" at the Cannes Film Festival, serving as a cultural ambassador for her country. Later that year, she partnered with Khon Kaen University to launch a corporate social responsibility model aimed at improving livelihoods for vulnerable groups. [edit]

Ubol Ratana projects an image of a modernizer within the rigid structure of the Thai monarchy. She is often described as progressive and unconventional, particularly due to her willingness to challenge tradition by running for office. Her style blends traditional Thai attire at formal events with Western clothing in casual settings. Media portrayals frequently highlight her dual identity as a royal princess and a former American commoner. This unique background allows her to serve as a bridge between Thailand and the West, though it also subjects her to intense scrutiny regarding the boundaries of royal neutrality. [edit]

Global attention for Ubol Ratana spans the intricate intersection of royal lineage, political disruption, and enduring cultural curiosity. The iFANN Global Fame Rankings now place her as the 26th most famous person in Thailand, a position reflecting her unique status within the kingdom's social fabric. Beyond national borders, she registers as the 14th most famous person from Thailand, a metric that captures the region-wide resonance of her public narrative. These placements track her visibility across media coverage, search trends, and consumption signals worldwide. She was featured at No. 15 in the September 2026 iFAMOUS Rankings. Despite this significant recognition, there is no formal fandom name associated with her; her audience engages through the lens of civic interest and royal protocol rather than the organized fan culture typical of entertainers. While pop stars cultivate armies and vote banks, Ubol Ratana's following remains defined by the gravity of her history and the singular moment she stepped into the political arena. [edit]

She is the only Thai royal to have won a gold medal at the Southeast Asian Games. Her academic background includes a Master's degree in Biochemistry from MIT, a rare qualification for a member of royalty. The 2019 election campaign remains the most widely discussed event of her adult life, often cited in discussions about the tension between the monarchy and democracy in Thailand. She is fluent in both English and Thai, which allowed her to navigate Western and Eastern cultures seamlessly during her time in the United States. Her Instagram account, @nichax, serves as a primary platform for sharing updates on her charitable work and public appearances. [edit]

Ubol Ratana is the eldest child of King Bhumibol Adulyadej and Queen Sirikit. Her younger brother is the current King Vajiralongkorn. She was married to Peter Ladd Jensen from 1972 until their divorce in 1998. The couple had two children: a son named Peter James Jensen and a daughter named Galyani Jensen. Following the divorce, she maintained close ties with her children while returning to live in Thailand. She currently lives in Bangkok and focuses on her royal duties and various charitable causes. Her relationship with her brother, the King, is complex; while he supported her return to the royal fold, his opposition to her 2019 political bid ended her campaign. [edit]

King Vajiralongkorn, Queen Sirikit, King Bhumibol Adulyadej, Peter Ladd Jensen, Pita Limjaroenrat[edit]

Princess Ubol Ratana has been married once. She met Peter Ladd Jensen while studying in the United States in the late 1960s. They married on December 24, 1972, a union that required her to renounce her royal title and become a commoner. The couple lived in the United States for over two decades, raising two children: Peter James Jensen and Galyani Jensen. The marriage ended in divorce in 1998 after 26 years together. Following the divorce, she returned to Thailand permanently in 2001 and was reinstated into the royal fold. As of 2026, she remains single and unmarried. There are no public records of romantic relationships following her 1998 divorce. She continues to focus on her royal duties and philanthropic work. [edit]

iFANN Editorial Team research estimates Princess Ubol Ratana's net worth at approximately $15 million as of 2026. Unlike commercial celebrities, her wealth does not stem from salaries or business ventures but from royal stipends and personal investments managed during her time in the United States. Financial support comes primarily from the Crown Property Bureau and royal allowances. Estimates vary widely because exact figures for royal finances are not transparent. Some sources suggest her personal assets, including real estate and investments made independently, could be valued between $10 million and $20 million USD. Other analyses place her net worth closer to $5 million USD, considering her lifestyle and lack of active commercial enterprise post-2001. Any figure above $20 million likely includes assets held by the broader royal family trust rather than her personal holdings. [edit]