The 1978 National League Championship Series was a best-of-five matchup for the second straight year between the West Division champion Los Angeles Dodgers and the East Division champion Philadelphia Phillies. The Dodgers beat the Phillies three games to one once again and would go on to lose the World Series to the New York Yankees, as they had the year before.

Los Angeles won the series, 3–1.

Wednesday, October 4, 1978, at Veterans Stadium in Philadelphia, Pennsylvania

Because of having to start an NL East-clinching game a few days earlier, Phillies ace Steve Carlton wasn't available for the start of the series, leaving the task to Larry Christenson. Christenson didn't fare well, as he was rocked for seven runs in five innings, the big blows coming on a three-run homer by Steve Garvey in the third inning and a two-run homer by Davey Lopes in the fourth. Garvey also added a triple and run scored in the fifth and another solo homer in the ninth. Steve Yeager also homered for the Dodgers.

Rookie Bob Welch took the win for the Dodgers.

Thursday, October 5, 1978, at Veterans Stadium in Philadelphia, Pennsylvania

The Dodgers won their second straight on the road in this series on the strength of a complete-game four-hit shutout by Tommy John. Davey Lopes continued to swing a hot bat, driving in three of the runs on a home run, single, and triple.

Friday, October 6, 1978, at Dodger Stadium in Los Angeles, California

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