The World’s Largest Companies 2012

Wal-Mart (NYSE:WMT) is no longer the world’s largest company.

Anemic sales in the U.S. coupled with several PR nightmares have contributed to the big-box retailer’s fall from No. 1 to No. 3 on this year’s Fortune Global 500 list. The successes and undertakings of big oil also played a role in Wal-Mart’s exit from the top spot.

Here’s a quick look at the world’s 20 biggest corporate titans.

1. Royal Dutch Shell (NYSE:RDS.A, NYSE:RDS.B)
2. Exxon Mobile (NYSE:XOM)
3. Wal-Mart
4. BP (NYSE:BP)
5. Sinopec Group
6. China National Petroleum
7. State Grid
8. Chevron (NYSE:CVX)
9. ConocoPhillips (NYSE:COP)
10. Toyota Motor (NYSE:TM)
11. Total (NYSE:TOT)
12. Volkswagen (PINK:VLKAY)
13. Japan Post Holdings
14. Glencore International (PINK:GLNCY)
15. Gazprom (PINK:OGZPY)
16. E.ON (PINK:EONGY)
17. ENI (NYSE:E)
18. ING (NYSE:ING)
19. General Motors (NYSE:GM)
20. Samsung Electronics

You can visit CNNMoney to find out what other companies made Fortune’s Global 500.