Safra Catz

Title: Co-President and CEO
Company: Oracle
Country: USA

Most big decisions at Oracle (orcl, -0.12%), whose software is part of the essential fabric of a huge swath of the Global 500, have Catz’s seal of approval— a degree of control that makes her one of the most powerful figures in technology. The Israeli-born Catz is also a key figure in Oracle’s acquisition strategy; this past year she completed seven acquisitions worth nearly $5 billion.