In his major league career, Barry Bonds hit 762 round trippers (home runs).

The second leading slugger of home runs was Hank Aaron with 755.

In third place for all time homers is the great Bronx Bomber, none other than Babe Ruth with 714 home runs.

In fifth place on the all time list is the Say Hey Kid, the great Willie Mays of the San Francisco Giants with 660 home runs.

More Info: en.wikipedia.org