You could call them the most eligible bachelors and bachelorettes in the world.
Ten of the wealthiest people on earth are still unmarried, according to Wealth-X, a company that conducts research on the superwealthy.
With Valentine's Day in mind, they provided us with a list of the richest bachelors and bachelorettes in their 20s, 30s, 40s, 50s, and 60s. These 10 tycoons are worth a combined $136 billion, and none of them are currently married.
From American tech moguls to a Turkish luxury-apparel baroness, here are some the wealthiest bachelors and bachelorettes around the world.
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20s: India Rose James

Age: 24
Net worth: $280 million
Country: UK
India Rose James inherited an estimated 40% of her maternal grandfather Paul Raymond's $1 billion empire upon his death in 2008. Raymond's wealth — known as the Soho Estates—came from varied property investments in London's Soho district, establishing Britain's first adult-entertainment bar and introducing pornography magazines to the country though Paul Raymond Publications.
James is currently focused on Soho Revue Gallery, the young-artist-focused contemporary art gallery she opened last spring with her then-boyfriend Will Pelham. The socialite has breakfast at the family-owned Soho House every morning, enjoys traveling, and aspires to follow in her grandfather's footsteps to become "an entertainer."
20s: Evan Spiegel

Net worth: $2.1 billion
Age: 25
Country: US
While still a student at Stanford in 2011, Evan Spiegel helped found Snapchat, the messaging app that lets users send disappearing photos to friends, with his classmates and fraternity brothers Reggie Brown and Bobby Murphy. The app took off, making Spiegel a bona fide billionaire by age 23. Today, he continues to run the $16 billion company as CEO.
He hasn’t tied the knot yet, but it’s no secret that Spiegel’s been dating supermodel Miranda Kerr. The pair is often photographed out in Los Angeles, and Kerr is all smiles talking about him. "He's just a really kind person and very genuine and very authentic and I really appreciate that about him,” she told E!.
30s: Elizabeth Holmes

Age: 32
Net worth: $4.5 billion
Country: US
Elizabeth Holmes is the youngest female billionaire in the world thanks to the success of her pain-free, needle-free blood testing company Theranos. When she was 19, Holmes dropped out of Stanford to found the company and has dedicated her life to it since. According to a 2014 New Yorker profile, the CEO lives in a "two-bedroom condo in Palo Alto ... no longer devotes time to novels or friends, doesn’t date, doesn’t own a television, and hasn’t taken a vacation in ten years."
Though Holmes' image is that of a well-intentioned hard worker, she's facing harsh criticisms for reports claiming dodgy business practices. "This is what happens when you work to change things," Holmes fired back. "First they think you're crazy, then they fight you, then you change the world."
See the rest of the story at Business Insider