The 2001 National League Championship Series (NLCS) saw the Arizona Diamondbacks defeat the Atlanta Braves in five games to win the National League pennant in the franchise's fourth year of existence. The Diamondbacks went on to defeat the New York Yankees in seven games to win the World Series.

The 2001 Atlanta Braves season marked the franchise's 36th season in Atlanta and 131st overall. The Braves won their seventh consecutive division title. The season saw the team finish first in the NL East Division with an 88-74 record – the worst among playoff teams in 2001, and also the worst record for the Braves since the 1994 strike-reduced season. Atlanta finished the season with just a 2 game division lead over the Philadelphia Phillies.