Whose paintings are the most expensive ever sold?

Leonardo da Vinci's "Salvator Mundi" ("Savior of the World"), painted circa 1500, sold for $450.3 million at Christie's on November 15, 2017 — the highest price ever paid for any artwork at auction. It was purchased by Saudi Crown Prince Mohammed bin Salman. The painting depicts Christ holding a crystal orb and was once sold for just £45 in 1958. Other record sales include: Willem de Kooning's "Interchange" ($300 million, private sale, 2015), Paul Cézanne's "The Card Players" (~$250 million, private sale, 2011), and Paul Gauguin's "Nafea Faa Ipoipo" ($210 million, private sale, 2015). When adjusted for inflation, the most expensive painting would be the Mona Lisa, insured in 1962 for $100 million — equivalent to over $1 billion today.