CNG, or compressed natural gas, is fuel gas mainly composed of methane.
CNG or cng may also refer to: Connecticut Natural Gas, an American natural gas distribution company Certified Naturally Grown, a nonprofit farm assurance certification program Cryptography API: Next Generation, an update of Microsoft CryptoAPI introduced in Windows Vista Cyclic nucleotide–gated ion channel, ion channels that function in response to the binding of cyclic nucleotides National Council of Government (Haiti), the provisional government of Haiti from 1986 to 1988, natively Conseil National de Gouvernement Colegio Nueva Granada, a private international school in Bogotá, Colombia Northern Qiang language (ISO 639-3 code: cng) Chinese Garden MRT station (MRT code: CNG)
See also Auto rickshaw, sometimes referred to in Bangladesh as CNG