Callaghan is a ranching community in Webb County, Texas, United States which 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 fourteen miles north of Laredo.

Callaghan is served by the United Independent School District in Laredo.