The following is a list of United States baseball teams that played in the National League in the 19th century. See National League pennant winners 1876-1900.

• Baltimore Orioles 1892-1899 (would later become the New York Highlanders, then the Yankees)
• Boston Red Stockings (Beaneaters) 1876-1900 (predecessors to the Boston Red Sox)
• Brooklyn Hartfords 1877
• Brooklyn Bridegrooms 1890-1900 (predecessors to the Brooklyn Dodgers — now the Los Angeles Dodgers)
• Buffalo Bisons 1879-1885
• Chicago White Stockings 1876-1900 (predecessors to the Chicago White Sox)
• Cincinnati Reds 1876-1880
• Cincinnati Reds 1890-1900
• Cleveland Forest Citys 1879-1884
• Cleveland Spiders 1889-1899 (predecessors to the Cleveland Indians)
• Detroit Wolverines 1881-1888 (precessors to the Detroit Tigers)
• Hartford Dark Blues 1876-1877
• Indianapolis Blues 1878
• Indianapolis Hoosiers 1887-1889
• Kansas City Cowboys 1886
• Louisville Grays 1876-1877
• Louisville Colonels 1892-1899
• Milwaukee Grays 1878
• New York Mutuals 1876
• New York Giants 1883-1900
• Philadelphia Athletics 1876
• Philadelphia Phillies 1883-1900
• Pittsburgh Pirates 1887-1900
• Providence Grays 1878-1885
• St. Louis Brown Stockings 1876-1877
• St. Louis Maroons 1885-1886
• St. Louis Browns 1892-1900 (predecessors to the St. Louis Browns — now the American League Baltimore Orioles)
• Syracuse Stars 1879
• Troy Trojans 1879-1882
• Washington Nationals 1886-1889
• Washington Senators 1892-1899
• Worcester Worcesters 1880-1882