The 2019 World Series was the championship series of Major League Baseball's (MLB) 2019 season. The 115th edition of the World Series, it was a best-of-seven playoff between the American League champion Houston Astros and the National League champion Washington Nationals. The series was played from October 22 to October 30. Washington upset the favored Astros, four games to three, to secure its first title in franchise history and first in the capital city since the 1924 series. Washington pitcher Stephen Strasburg was named the World Series Most Valuable Player (MVP) after earning two wins in the series.

The World Series is the annual final championship series of Major League Baseball (MLB) in the United States and Canada. It has traditionally been held in October, though some more recent editions were contested in November due to expanded playoffs and/or season delays. It has been contested since 1903 between the champion teams of the American League (AL) and the National League (NL). The winner of the World Series championship is determined through a best-of-seven playoff, and the winning team is awarded the Commissioner's Trophy.