Nebraska Corn Growers Association
- Highlights research, promotion and public policy efforts for growing corn in the state. Includes membership information, events, current issues, news, weather and markets.
- http://www.necga.org/

Minnesota Corn Growers Association
- Non-profit group, focused at providing representation for Minnesota farmers on collective legislative issues.
- http://www.mncorn.org/

Iowa Corn Growers Association
- Provides research, science and market information. Includes information about membership, newsletters, events, weather and markets.
- http://www.iowacorn.org/

Kansas Corn Growers Association
- Information resource for corn growers in Kansas and elsewhere.
- http://www.ksgrains.com/corn/

National Corn Growers Association
- News, facts and information for growers, media, educators and anyone else interested in corn. US association.
- http://www.ncga.com

Corn Refiners Association, Inc.
- U.S. national association representing the corn refining (wet milling) industry.
- http://www.corn.org/

North Dakota Corn Growers Association
- Their mission is to provide increasing opportunities for North Dakota corn growers in a global market.
- http://www.ndcorn.com/