The World's Top 10 Crops

By mass produced per year, the world's ten most grown crops are:
1. Corn
2. Wheat
3. Rice
The big three-- corn is used for a lot of non-food purposes, so wheat and rice are probably eaten more.
4. Potatoes
5. Cassava
Thanks again, Columbian exchange.
6. Soybeans
7. Sweet potatoes
8. Sorghum
9. Yams
Nigeria is the world's top producer of yams.
10. Plantain

Just as a test of how this list applies to the US, I've examined the labels of any food products within reach of my swivel chair. I have corn syrup, high fructose corn syrup, corn starch, yellow corn meal, corn oil, enriched wheat flour, whole wheat flour, wheat gluten, wheat bran, potatoes, soybean oil, soy flour, soy lecithin, and modified soy protein.

I'm guessing that in the US, the big three are corn, wheat, and soybeans. My list might have looked a bit more healthy, but the box of Raisin Bran was out of reach.

Source: http://www.businessinsider.com/10-crops-that-feed-the-world-2011-9?op=1