- Family: Atlas
- Length: 52.8 m
- Diameter: 3.05 m
- Launch Mass: 213 T
- Low Earth Orbit Capacity: 10218 kg
The Atlas IIIB was manufactured by Lockheed Martin with the first launch on 2002-02-21. Atlas IIIB has 4 successful launches and 0 failed launches with a total of 4 launches. American orbital launch vehicle used between 2000 and 2005.