Trunkline

A trunkline or trunk line may refer to:


 * A natural gas or oil line using pipeline transport
 * Trunkline LNG, a liquid natural gas plant in Lake Charles, Louisiana
 * Trunkline Pipeline, a pipeline that runs from Texas and Louisiana to Illinois and Indiana
 * Trunking trunkline, a main telecommunications link such as a phone line directly connecting exchanges or switchboards at a considerable distance apart
 * A main transportation link such as:
 * A main line (railway)
 * The rail line on Norway Trunk Line
 * A component of the Michigan State Trunkline Highway System
 * Synonym for trunk carrier, a type of airline regulated by the Civil Aeronautics Board of the United States until 1978