Interurbano Line, is a commuter railway line in Costa Rica, operated by the national public railway operator Incofer. The line connects the provinces of Alajuela, Heredia, San José and Cartago.

Rail transport in Costa Rica is primarily under the stewardship of Incofer, an autonomous institution of the state. Incofer owns the national railway infrastructure and operates virtually all freight and passenger services, which consist primarily of commuter trains through the highly populated Central Valley. The whole Incofer network is 1,067 mm narrow gauge, although there are several small tourist railways of other gauges.