Callaghan is a ranching community in Webb County, Texas and was established in 1881. The community was named after a nearby ranch owned by Charles Callaghan and much later Joe B. Finley. The community was once a cattle shipping point on the International and Great Northern Railroad. Callaghan is served by the Callaghan Ranch Airport (ICAO: 90TX). Callaghan is fourteen miles north of Laredo, Texas.