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.

Marius Kloppers
18. Marius Kloppers
CEO, BHP Billiton

Talk about being in a hurry: Kloppers took over as chief executive of the world's biggest mining company by market capitalization (some $200 billion) on Oct. 1. One month later he launched a $150 billion takeover bid for rival Anglo-Australian mining giant Rio Tinto; the combined entity would be a resources superpower with a larger market cap than Microsoft and higher revenues (some $70 billion combined in 2007) than Dell or Boeing.

Mining insiders weren't too surprised by the move. Kloppers, a 45-year-old vegetarian, has a reputation as an aggressive executive with superior intellectual bandwidth. BHP produces, in vast quantities, industrial staples like iron ore, copper, coal, nickel, uranium, oil, gas, and aluminum. That makes K loppers a crucial middleman in the global economy. --Brian O'Keefe

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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