This bibliography reviews the potential of compressed natural gas (CNG) as transportation fuel. The added bibliography at the end of this article contains 822 references to papers, conference proceedings and theses/dissertations on the subject that were published between 2001 and 2015. These references have been retrieved from 111 scientific journals. The references are classified in the following categories: Regional Experience with CNG Vehicles; Economic Aspect of CNG Vehicles; CNG Engine's Design, Control and Performance; Combustion and Fuel Injection Characteristics of CNG Engines; CNG/Diesel Dual Fuel Operations; Hydrogen Enriched CNG Vehicles; Environmental Aspect of CNG Vehicles; Safety Aspect of CNG Vehicles. (C) 2016 Elsevier B.V. All rights reserved.