- Family: Titan
- Length: 47.3 m
- Diameter: 3.05 m
- Launch Mass: 680 T
- Low Earth Orbit Capacity: 14742 kg
The Commercial Titan III was manufactured by Lockheed Martin with the first launch on 1990-01-01. Commercial Titan III has 4 successful launches and 0 failed launches with a total of 4 launches. The Commercial Titan III, also known as CT-3 or CT-III, was an American expendable launch system, developed by Martin Marietta during the late 1980s and flown four times during the early 1990s. It was derived from the Titan 34D, and was originally proposed as a medium-lift expendable launch system for the US Air Force, who selected the Delta II instead. Development was continued as a commercial launch system, and the first rocket flew in 1990. Due to higher costs than contemporary rockets such as the Ariane 4, orders were not forthcoming, and the CT-3 was retired in 1992.
