Organo-fluorine compounds are industrially important. Their method of preparation depends on the selection of fluorinating agents. Electrochemical fluorination is a widely used industrial method for obtaining fluoro-organic compounds. Electrochemical fluorination is of three types, viz. electrofluorination, the Philips method or Cave process, and Simon's process. The advantages, cell design, difference in different electrochemical methods and the mechanism in each method are reviewed in detail. The electrochemical synthesis of some industrially important fluoro-organic compounds, especially amines, nitrogen-containing carboxylic acids, benzene, substituted benzene, heterocyclic compounds, simple carboxylic acids, organo-sulfur compounds and cyclic amino ethers, is discussed at length.