Chennai Petroleum Corp Ltd (CPCL) is an oil refining company. It produces multiple types of fuel products, lubricants, and additives. Its products include liquefied petroleum gas, aviation turbine fuel, naphtha, high-speed diesel, bitumen, superior kerosene and motor spirit.

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The company's R&D activities focus on supporting refinery operations by providing technological inputs and building capabilities. The company in association with national laboratories and academic institutions develops new products and upgrades the quality of the existing petroleum products. CPCL’s major areas of research include crude assay; evaluation of catalyst and feedstock for fluidized catalytic cracking unit (FCCU), hydro-processing and hydrocracking process units; development of catalysts for refining processes; solvent extraction; product formulation-rubber process oils, modified bitumen; oxidative adsorptive desulphurization and biofuels. In FY2023, the company spent INR32.8 million in research and development which was 0.004 % of its revenue.