Tennga is a small unincorporated community in Murray County, Georgia, United States, along U.S. Route 411 near the Tennessee border The community's name is unique, being a portmanteau of the "Tenn." and "Ga." abbreviations used prior to USPS-standard state codes.
Tennga is located at 34°59′14″N 84°44′18″W / 34.98718°N 84.73842°W / 34.98718; -84.73842Coordinates: 34°59′14″N 84°44′18″W / 34.98718°N 84.73842°W / 34.98718; -84.73842, at an elevation of 887 feet (270 m) above sea level. The area is served by Rostex Airport, which has a single paved runway.
On March 28, 2000, Tennga was the site of a collision between a Murray County School District school bus and a 33-car southbound CSX freight train, which resulted in the deaths of three children at a railroad crossing. The railroad roughly parallels U.S. 411, and is likewise a well-used shortcut around Chattanooga for traffic between Atlanta and Knoxville.