Coronel Pringles is a city in the south of the Buenos Aires Province in Argentina, situated near the mountains of Pillahuincó. It is the government seat of the Coronel Pringles Partido.

The Unidad Ejecutora del Plan Ferroviario Provincial (UEPFP) (in English: "Executive Unit of the Provincial Railway Plan"), mostly known under its trade name Ferrobaires, was a public railway company which operated extensive long-distance passenger trains throughout the Buenos Aires Province in Argentina. The company was primarily owned and funded by the Buenos Aires provincial government led by Eduardo Duhalde. The name "Ferrobaires" is a combination of the Spanish words for "Rail Buenos Aires."