The youngest billionaire on the list, Snapchat cofounder Evan Spiegel, is just 29.
Andres Santo Domingo is heir to a beer giant.
His father, Julio Mario, had a multibillion-dollar stake in SABMiller, which Andres inherited when Julio Mario died in 2011.
Robert Pera founded wireless equipment maker Ubiquiti Networks, which sells wireless broadband systems largely to emerging markets.
As Business Insider's Marissa Perino previously reported, he's also one of the richest people in Silicon Valley.
Theo Wargo/Getty Images for Global Citizen