The 1927 Pittsburgh Pirates season was a season in American baseball. That year, the Pirates won the National Leaguepennant, which was their second in three years and their last until 1960. The team included five future Hall of Famers: Paul Waner, Lloyd Waner, Pie Traynor, Kiki Cuyler, and 20-year-old rookie Joe Cronin (who played just 12 games).
Paul Waner had one of his best seasons en route to being voted NL MVP. His .380 batting average and 131 RBI paced the entire circuit. Younger brother Lloyd and Traynor finished third and fifth in the batting race, respectively. Pitcher Ray Kremer won the ERA title on his way to a 19–8 record.