Markets in agricultural products in India are primarily regulated under the Agricultural Produce Market Committee (APMC) Act enacted by States. The APMC Act provides for the establishment of market committees, regulation of marketing of agricultural produce, and the licensing and regulation of market intermediaries such as commission agents and traders.

The Essential Commodities Act, 1955, is a broader legislation that empowers the central government to regulate the production, supply, and distribution of essential commodities, including agricultural products, in the interest of the general public. It provides for the control of prices, production, and distribution of essential commodities during times of scarcity or in the interest of maintaining or increasing supplies.

The Agricultural Produce (Grading and Marking) Act, 1937, provides for the grading and marking of agricultural produce to ensure quality standards.

The Food Products Order, 1956, and Meat and Food Products Order, 1973, are specific orders related to the regulation and control of food products and meat products, respectively, under the Essential Commodities Act.

However, in the context of regulating markets in agricultural products, the Agricultural Produce Market Committee (APMC) Act is the most relevant legislation enacted by States in India.