Alamo Gulf Coast Railroad
（重定向自AGCR）
The Alamo Gulf Coast Railroad (reporting markAGCR) is a short-line railroad headquartered in San Antonio, Texas. It is a subsidiary of Martin Marietta Materials, a spinoff of Lockheed Martin.
AGCR operates a 3.5 mile (5.6 km) line near Beckman, Texas (where it interchanges with Union Pacific Railroad). AGCR traffic includes crushed limestone and some lumber products.