A phrase that refers to a multi-year, multi-commodity federal support law. It usually amends some and suspends many provisions of permanent law, reauthorizes, amends, or repeals provisions of preceding temporary agricultural acts, and puts forth new policy provisions for a limited time into the future. Beginning in 1973, farms bills have included titles on commodity programs, trade, rural development, farm credit, conservation, agricultural research, food and nutrition programs, marketing, etc. These are referred to as omnibus farm bills.

The following is a generally agreed chronological list of farm bills:

1. Food and Agriculture Act of 1965, P.L. 89-321;
2. Agricultural Act of 1970, P.L. 91-524;
3. Agriculture and Consumer Protection Act of 1973, P.L. 93-86;
4. Food and Agriculture Act of 1977, P.L. 95-113;
5. Agriculture and Food Act of 1981, P.L. 97-98;
6. Food Security Act of 1985, P.L. 99-198;
7. Food, Agriculture, Conservation, and Trade Act of 1990, P.L. 101-624;
8. Federal Agricultural Improvement and Reform Act of 1996, P.L. 104-127, Farm Security and Rural Investment Act of 2002.