Not solid gold, no. Currently, the Academy Award statuettes are made of gold-plated britannium, an alloy that's mostly made of tin. The very first Oscar statuettes were made of gold-plated solid bronze.
Gallery of Fame: ‘Look at Me!’ Art Work – Vol. 74 No. 12
In this February 1958 file photo, Doris Day and Tony Curtis pose with their awards for best actress and actor presented by the Hollywood Foreign Press Association at its annual awards dinner in Los Angeles.