Due to its highly urbanized nature, agriculture within the Chennai city limits is virtually non-existent. However, the broader metropolitan region and surrounding districts (like Kanchipuram and Tiruvallur) cultivate paddy, sugarcane, and groundnuts.
Within the city's coastal identity, the fisheries sector plays a vital economic role. The Kasimedu Fishing Harbor is one of the largest in the region, serving as a primary hub for marine food production, processing, and export. Peri-urban areas also support horticulture, poultry farming, and dairy production to supply the massive daily needs of the city's population.