25 most powerful people in business

Some are empire builders. Others are hired guns. But if they truly have world-class oomph, they're on Fortune's subjective - yet really quite accurate - list of the most powerful businesspeople in the world.

Rex Tillerson
6. Rex Tillerson
Chairman and CEO, Exxon Mobil

An oilman down to his boots, Tillerson makes no apologies for running the world's biggest non-state-run oil company. Exxon Mobil gets high marks for the quality of its operations, and its stock has out-distanced the S&P 500 on Tillerson's watch. He has even made something of a modest PR splash by acknowledging the possibility of global warming, something his prickly predecessor never did. Exxon under Tillerson has learned that it needn't pick a fight in order to throw around its weight. --Jon Birger

Steve Jobs

Rupert Murdoch

Lloyd Blankfein

Eric Schmidt, Larry Page, and Sergei Brin

Warren Buffett

Rex Tillerson

Bill Gates

Jeff Immelt

Katsuaki Watanabe

A.G. Lafley

John Chambers

Li Ka-shing

Lee Scott

Lakshmi Mittal

Jamie Dimon

Mark Hurd

James McNerney

Marius Kloppers

Steve Schwarzman

Carlos Slim

Steve Feinberg

Indra Nooyi

Ratan Tata

Bob Iger

Bernard Arnault
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