While there are countless billionaires around the world, few match the regal wealth and extravagant lifestyle of King Maha Vajiralongkorn of Thailand—better known as King Rama X. According to The Business Standard, he is considered the richest king in the world, with a staggering estimated net worth of Rs 3.7 lakh crore (approximately USD 43 billion).
Unlike typical billionaires, King Vajiralongkorn’s wealth is rooted in centuries-old royal lineage and further amplified by modern investments. His fortune, inherited largely after the passing of his father King Bhumibol Adulyadej in 2016, has since been expanded through stakes in Thailand’s major companies and real estate holdings.
The monarch owns over 17,000 properties in Bangkok alone, making him one of the largest landowners in the country. His luxury collection includes over 300 high-end cars, 38 private jets, and a fleet of 52 golden boats, which are used exclusively for royal ceremonies and reflect the opulence of Thailand’s monarchy.
Born in 1952, Vajiralongkorn is the only son of King Bhumibol and Queen Sirikit. He received military education in the UK and Australia and is a trained jet and helicopter pilot. He graduated from the University of New South Wales with a degree in military studies and served in the Royal Thai Army, even taking part in anti-insurgency operations during the 1970s.
Despite his controversial personal life, including four marriages and frequent media scrutiny, King Vajiralongkorn remains a dominant symbol of Thailand’s royal legacy, luxury, and power.
Meanwhile, in India, Mukesh Ambani and Gautam Adani continue to dominate the billionaire charts. As of May 2025, Ambani, with an estimated net worth of USD 92.5 billion, holds the title of India’s richest person. Adani follows with USD 56.3 billion, with investments spanning energy, ports, and infrastructure.
In contrast to corporate billionaires, King Vajiralongkorn stands out not only for his immense wealth but also for a lifestyle that rivals any global celebrity or monarch.