The Rice Millers' Association (RMA) is a private, non-profit, national trade association of the United States' rice milling industry. Organized in 1899, the RMA is one of the oldest agricultural organizations in the United States. Membership is composed of independently-owned rice milling companies and farmer-owned cooperative rice mills in Arkansas, California, Florida, Louisiana, Missouri, Mississippi, Tennessee, and Texas. RMA members process 99 percent of the rice produced in the United States, market practically all of the rice sold domestically, and have become increasingly involved in selling rice directly to foreign buyers. The RMA is not affiliated with any U.S. government agency.

Primary functions of the RMA are to observe, interpret, and promote activities that advance the interests of the U.S. rice milling industry. The Association works in the following specific areas: a) Collection, compilation, analysis, and distribution of economic and statistical information related to all phases of the rice industry, both in the United States and abroad; b) promote friendly relations and act as a liaison between the rice industry and the Congress, departments of U.S. government, foreign governments, and other sectors of the rice trade; c) stimulate and promote research that will benefit production, storage, handling, processing, utilization, and marketing of rice; d) arbitrate disputes between members and customers; e) assist in the establishment of quality standards, and many other activities which advance the interests of the industry.