Western League (1885–1900), the predecessor to the modern American League of 1901 in Major League Baseball
Western League (1900–1958), a former U.S. minor baseball league loop. Its region was later represented by the more dominant Pacific Coast League in Class AAA ("Triple A")
Western League (1939–1941), a Class D, low minor circuit in the U.S. that existed briefly before World War II
Western Baseball League, a former independent minor league in the U.S. which ceased operation in 2002
