Interline

Interline may refer to:
 * Interlineation in law
 * Interlining, itineraries that use more than one airline
 * Interline travel, also in airlines
 * Freight interline system, for freight transport
 * Interline spacing in typography
 * Interlinear gloss in linguistics and pedagogy
 * Interline twitter in interlaced displays

Companies

 * Interline Brands
 * Interline Bus Services
 * Interliner, Dutch express bus service