Diesel fuel plays a crucial role in the prosperity and economy of the country. The application of diesel fuel additives is necessary, in order to improve the diesel fuel quality and to achieve the better performance from the diesel engines. The cetane number improvers which are available at commercial level include 2-ethylhexylnitrate (EHN) and di-tert-butylperoxide (DTBP) and lubricity improvers mainly consists long chain hydrocarbons and fatty acid esters. In present book the synthesis of dual functional diesel fuel additives from vegetable oils and animal fat has been demonstrated mainly using prepared heterogeneous catalysts. The prepared diesel fuel additives have been tested for their cetane number and lubricity improver properties.