In 1969, the league split into East and West divisions, and the two division winners played in the National League Championship Series to determine the league champion who would then face the American League champion in the World Series. For NL Pennant winners from 1876-1900 see 19th century National League teams.
NL pennant winners (1901-1968)
For NL pennant winners from 1969 to the present, see National League Championship Series.