The Queen of England is not the world's richest woman. The title of the richest woman in the world belongs to Christy Walton, the widow of Walmart tycoon John Walton. Christy Walton has a fortune of $36.7 billion as of 2014, according to Forbes Magazine.
Forbes Magazine reports that out of the world's 1,645 billionaires, 172 of them are women. Walton has held the title of the world's richest woman for 4 of the past 5 years. The heiress to the L'Oreal fortune, 91-year-old Liliane Bettencourt, is the second richest woman in the world with a net worth of $34.5 billion. Alice Walton, sister-in-law of the world's richest woman, is the third richest woman in the world. She has amassed a fortune of $34.3 billion as of 2014.