The third season of the reimagined science fiction television series Battlestar Galactica premiered on Sci Fi in the United States on October 6, 2006, and concluded on March 25, 2007. Unlike the previous season, it was not split into two parts and did not have an extended hiatus during the middle of the season. The third season contained 20 episodes.

The second season of the reimagined science fiction television series Battlestar Galactica premiered on Sci Fi in the United States on July 15, 2005, and concluded on March 10, 2006. The season was split into two parts, each containing 10 episodes. "Season 2.0" aired from July to September 2005, and "Season 2.5" aired from January to March 2006.