Economy of Jamnagar District in Gujarat is chiefly dependent on brass parts supply. Jamnagar district caters to over 70 percent of the country`s prerequisite for brass parts supply. There are over 4,500 units involved in production of brass parts and Jamnagar district is the most important supplier to the electric and electronics factories situated in Delhi, Bengaluru and Mumbai. Jamnagar is one of the most important inventers for production of tie-dyed fabric (Bandhani) in the State. Other chief industry sectors of the district comprise engineering and machinery, plastics and oil mills. Petroleum refineries of industry leaders such as Reliance Industries and Essar oil, chemical fertiliser complex Gujarat State Fertilisers Corporation (GSFC), and a chemical plant of Tata Chemicals is based in the district. Huge reserves of bauxite are found in the district. Hence, mineral based calcite, bauxite, and abrasives industries are well developed in Jamnagar district.

Most important fruits produced in the district are papaya, mango, chiku and coconut. Papaya contributes over 72 percent to total fruit production in the district. Onion, potatoes, tomatoes, cauliflower and cluster beans are the major vegetables grown in the district. Jamnagar is the third largest producer of garlic in Gujarat state. The district is the third largest producer of groundnut in the State contributing 15 percent to total production. The major minerals found in the district are calcite, bauxite, limestone, and chalk. Other minerals obtainable in the district include sand, gypsum, black trap, and bentonite. Jamnagar is the largest producer of bauxite in the State contributing 96 percent to the total production.

Jamnagar district has around 34 medium and large scale industrial units concerned in production of cement, yarn, agriculture equipments, solvents, edible oils, soda ash, salt, and fertilisers. Medium and large scale industries generate over 7,000 employment opportunities in the district. Out of total Middle and Large scale units, 17 are concentrated in Jamnagar city while rest are spread across Sikka, Okha, Jodiya, Lalpur, and Kalyanpur talukas of the district. There are over 12,700 small scale industries which operate in Jamnagar. Some of the main industries under SSI in Jamnagar are metal industries, food products, rubber, and plastic products. Maximum number of SSI units located in the district is related to metal products followed by repairing and services industry.

Jamnagar district enjoys domination in manufacturing of Brass parts and its products in the State. The industry is one of the most important revenue and employment generating industries in the district. Bedi port in Jamnagar is an idyllic location for handling agriculture produce. The propinquity to giant refineries and petrochemical complexes of major players can offer significant business volumes to the district. Proposed SEZs of Industrial giants such as, Reliance and Essar and presence of large number of industrial estates are accelerating the industrial growth of the district in terms of investment and employment. Salt industry in the district is well developed with around 17 salt work units operational in the district. The proximity to Sikka and Bedi ports along with proposed upgradation of Bedi-Rozi port shall boost the exports of salt from the district.