The 2005 Atlanta Braves season marked the franchise's 40th season in Atlanta. The Braves won their 15th consecutive division title under Manager of the Year Bobby Cox, finishing 10 games ahead of the second-place Philadelphia Phillies. The Braves lost the 2003 Divisional Series to the Houston Astros, 3 games to 2.
Tim Hudson joined the Braves' rotation and rookies Jeff Francoeur, Kelly Johnson and Brian McCann had their first seasons with Atlanta in 2005.
October 15, 2004: DeWayne Wise was selected off waivers by the Detroit Tigers from the Atlanta Braves.
December 3, 2004: Julio Franco was signed as a Free Agent with the Atlanta Braves.
December 11, 2004: Traded by the Milwaukee Brewers to the Atlanta Braves for a player to be named later and Jose Capellan. The Atlanta Braves sent Alec Zumwalt (minors) (December 14, 2004) to the Milwaukee Brewers to complete the trade. 
December 16, 2004: Tim Hudson was traded by the Oakland Athletics to the Atlanta Braves for Juan Cruz, Dan Meyer, and Charles Thomas.
January 14, 2005: Raúl Mondesí Signed as a Free Agent with the Atlanta Braves.
March 31, 2005: Jorge Sosa was traded by the Tampa Bay Devil Rays to the Atlanta Braves for Nick Green.
Andruw Jones led the National League in home runs and runs batted in. He was the recipient of a Gold Glove, Silver Slugger, and the Hank Aaron Award. Jones also finished second in voting for National League Most Valuable Player.
Jeff Francoeur finished third in voting for National League Rookie of the Year.