The 2003 National League Division Series (NLDS), the first round of the 2003 National League playoffs, began on Tuesday, September 30, and ended on Sunday, October 5, with the champions of the three NL divisions—along with a "wild card" team—participating in two best-of-five series. The teams were:

The higher seed (in parentheses) had the home field advantage (Games 1, 2 and 5 at home), which was determined by playing record. Although the team with the best record was normally intended to play the wild card team, the Braves played the Cubs, rather than the wild card Marlins, because the Braves and Marlins are in the same division.

The Cubs and Marlins went on to meet in the NL Championship Series, for the right to advance to the 2003 World Series against the American League champion New York Yankees.

Chicago won the series, 3–2.

Florida won the series, 3–1.

Turner Field in Atlanta

In Game 1, Kerry Wood faced Russ Ortiz. Both pitchers were on their game and in the bottom of the third the Braves struck first when Marcus Giles homered to make it 1–0 Braves. The score remained 1–0 until the top of the sixth. The Cubs would load the bases with three consecutive hits to lead off the inning. But Ortiz got the next two outs, with the last of the two being an RBI groundout by Paul Bako. But Wood would add insult to injury by doubling in two runs and then scoring on Kenny Lofton's single—That made it 4–1 Cubs. A forceout gave the Braves a run in the eighth but Joe Borowski closed the door in the ninth. Combined the Cubs bullpen allowed only one hit, a ninth-inning single by Vinny Castilla.

This was the Cubs' first road postseason victory since Game 3 of the 1945 World Series

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