A billionaire is a person who has a net worth of at least one billion units of a currency. Billionaire(s) also may refer to: Billionaire (card game) or Pit, a commodity-trading card game "Billionaire" (song), a song by Travie McCoy ft. Bruno Mars "Billionaire", a song by Peaches from I Feel Cream Billionaire (Los Angeles, California), a private residence in Bel Air designed by Bruce Makowsky See also Millionaire (disambiguation)