Information about the 2009 season and links to official sites of minor league teams
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Complete List of Minor Leagues

AAA

International League (1912-present), Class AAA (1946-present), Class AA (1912-1945), Eastern League (1902-1911)
Pacific Coast League (1904-present), Class AAA (1946-1951,1958-present), Open Classification (1952-1957), Class AA (1912-1945), Class A (1904-1911)

AA

Eastern League (1938-present), Class AA (1963-present), Class A (1938-1962), New York-Pennsylvania League (1923-1937)
Southern League (1964-present), Class AA (1964-present), South Atlantic League (1946-1963)
Texas League (1946-present), Class AA (1946-present)

A (Advanced)

California League (1946-present), Class C (1946-1962), Class A (1963-present)
Carolina League (1945-present), Class C (1945-1948), Class B (1949-1962), Class A (1963-present)
Florida State League (1946-present), Class D (1946-1962), Class A (1963-present)

A

Midwest League (1956-present), Class D (1956-1962), Class A (1963-present), Mississippi-Ohio Valley League (1949-1955), Illinois State League (1947-1948)
South Atlantic (Sally) League (1980-present), Class A (1980-present), Western Carolinas League (1963-1979), Western Carolina League (1960-1962)

A (Short Season)

New York-Pennsylvania League (1957-present), Class D (1957-1962), Class A (1963-present), Pennsylvania-Ontario-New York (PONY) League (1939-1956)
Northwest League (1955-present), Class B (1955-1962), Class A (1963-present), Western International League (1946-1954)

Rookie

Appalachian League (1957-present), Class D (1957-1962), Rookie Classification (1963-present)
Pioneer League (1946-present), Class C (1946-1962), Rookie Classification (1963-present)
Defunct Leagues:
Alabama-Florida League Class D (1936-1939), Alabama State League (1940-1941)
Alabama-Florida League Class D (1951-1962), Alabama State League (1946-1950)
Alabama State League Class D (1940-1941), Alabama-Florida League (1936-1939)
Alabama State League Class D (1946-1950), Alabama-Florida League (1951-1962)
Alabama-Tennessee League Class D (1921)
American Association Class A (1903-1911), Class AA (1912-1945), Class AAA (1946-1962)
American Association Class AAA (1969-1997)
Appalachian League Class D (1911-1914)
Appalachian League Class D (1921-1925)
Appalachian League Class D (1937-1955)
Arizona-Mexico League Class D (1955-1958), Arizona-Texas League (1952-1954)
Arizona State League Class D (1928-1930), Arizona-Texas League (1931-1932)
Arizona-Texas League Class D (1931-1932), Arizona State League (1928-1930)
Arizona-Texas League Class D (1937-1939), Class C (1940-1941)
Arizona-Texas League Class C (1947-1950), Southwest International League (1951-1952)
Arizona-Texas League Class D (1952-1954), Arizona-Mexico League (1955-1958)
Arkansas-Missouri League Class D (1936-1940), Arkansas State League (1934-1935)
Arkansas State League Class D (1908-1909)
Arkansas State League Class D (1934-1935), Arkansas-Missouri League (1936-1940)
Arkansas-Texas League Class D (1906)
Atlantic Association Class D (1908)
Atlantic League Class D (1914), New York-New Jersey League (1913)
Bi-State League (IL-WI) Class D (1915)
Bi-State League (NC-VA) Class D (1934-1942)
Big State League Class B (1947-1957)
Blue Grass League Class D (1908-1912)
Blue Grass League Class D (1922-1924)
Blue Ridge League (PA-MD-WV) Class D (1915-1918)
Blue Ridge League (PA-MD-WV) Class D (1920-1930)
Blue Ridge League (NC-VA) Class D (1946-1950)
Border League Class D (1912-1913)
Border League Class C (1946-1951)
Buckeye League Class D (1915)
California League Class C (1941-1942)
California State League Class D (1910)
California State League Class D (1913-1915)
California State League Class D (1929)
Canadian League Class D (1905)
Canadian League Class D (1911), Class C (1912-1913), Class B (1914-1915)
Canadian-American League Class C (1936-1942)
Canadian-American League Class C (1946-1951)
Cape Breton Colliery League Class D (1937-1938), Class C (1939)
Carolina Association Class D (1908-1912), North Carolina State League (1913-1917)
Central Association Class D (1908-1917), Iowa State League (1904-1907)
Central Association Class C (1947-1949)
Central League Class B (1903-1917)
Central League Class B (1920-1922)
Central League Class C (1926)
Central League Class B (1928-1930)
Central League Class B (1932)
Central League Class B (1934)
Central League Class A (1948-1951)
Central California League Class D (1910-1911)
Central International League Class C (1912), Northern League (1913-1917)
Central Kansas League Class D (1908-1912), Kansas State League (1913-1914)
Central Texas League Class D (1914-1917)
Coastal Plain League Class D (1937-1941)
Coastal Plain League Class D (1946-1952)
Colonial League Class C (1914)
Colonial League Class B (1947-1950)
Connecticut Association Class D (1910)
Connecticut League Class D (1902-1904), Class B (1905-1912), Eastern Association (1913-1914)
Copper Country Soo League Class D (1905), Northern-Copper Country League (1906-1907)
Cotton States League Class D (1902-1908)
Cotton States League Class D (1910-1913)
Cotton States League Class D (1922-1932)
Cotton States League Class C (1936-1941)
Cotton States League Class C (1947-1955)
Dakota League Class D (1921-1922), South Dakota League (1920,1923)
Delta League Class D (1904)
Dixie League (AL-GA) Class D (1916-1917)
Dixie League (AR-LA-MS-TX) Class C (1933), East Dixie League (1934-1935), West Dixie League (1934-1935)
East Dixie League Class C (1934-1935), Dixie League (1933)
East Texas League Class D (1916)
East Texas League Class D (1923-1926)
East Texas League Class D (1931)
East Texas League Class C (1936-1940)
East Texas League Class C (1946)
East Texas League Class C (1949-1950)
Eastern Association Class B (1913-1914), Connecticut League (1902-1912)
Eastern League Class A (1902-1911), International League (1912-present)
Eastern League Class B (1916-1918), Class A (1919-1932)
Eastern Canada League Class B (1922-1923)
Eastern Carolina League Class D (1908-1910)
Eastern Carolina League Class D (1928-1929)
Eastern Illinois League Class D (1907-1908)
Eastern Kansas League Class D (1910)
Eastern Shore League Class D (1922-1928)
Eastern Shore League Class D (1937-1941)
Eastern Shore League Class D (1946-1949)
Empire State League Class D (1913), Georgia State League (1914-1915), Florida-Alabama-Georgia League (1915)
Evangeline League Class D (1934-1942)
Evangeline League Class D (1946-1948), Class C (1949-1957)
Far West League Class D (1948-1951)
Florida-Alabama-Georgia League Class D (1915), Empire State League (1913), Georgia State League (1915)
Florida East Coast League Class D (1940-1942)
Florida International League Class C (1946-1948), Class B (1949-1954)
Florida State League Class D (1919-1920), Class C (1921-1924), Class D (1925-1928)
Florida State League Class D (1936-1941)
Georgia-Alabama League Class D (1913-1917)
Georgia-Alabama League Class D (1928-1930)
Georgia-Alabama League Class D (1946-1951)
Georgia-Florida League Class D (1935-1942)
Georgia-Florida League Class D (1946-1958)
Georgia-Florida League Class D (1962), Class A (1963)
Georgia State League Class D (1906)
Georgia State League Class D (1914-1915), Empire State League (1913), Florida-Alabama-Georgia League (1915)
Georgia State League Class D (1920-1921)
Georgia State League Class D (1948-1956)
Gulf Coast League Class D (1907-1908)
Gulf Coast League Class D (1926)
Gulf Coast League Class C (1950), Class B 1951-1953
Gulf States League Class A (1976), Lone Star League (1977)
Hudson River League Class D (1903), Class C (1904-1907)
Illinois-Iowa-Indiana (Three-I) League Class B (1902-1917)
Illinois-Iowa-Indiana (Three-I) League Class B (1919-1932)
Illinois-Iowa-Indiana (Three-I) League Class B (1935)
Illinois-Iowa-Indiana (Three-I) League Class B (1937-1942)
Illinois-Iowa-Indiana (Three-I) League Class B (1946-1961)
Illinois-Missouri League Class D (1908-1914)
Illinois State League Class D (1947-1948), Midwest League (1956-present), Mississippi-Ohio Valley League (1949-1955)
Indiana-Michigan League Class D (1910)
Indiana-Ohio League Class D (1908)
Inland Empire League Class D (1908)
Inter-Mountain League Class D (1909)
International League Class D (1908)
Interstate Association Class C (1906)
Interstate League Class D (1905-1908)
Interstate League Class D (1913)
Interstate League Class D (1914-1916)
Interstate League Class D (1932)
Interstate League Class C (1939), Class B (1940-1952)
Iowa-South Dakota League Class D (1902-1903)
Iowa State League Class D (1904-1907), Central Association (1908-1917)
Kansas-Oklahoma-Missouri (KOM) League Class D (1946-1952)
Kansas State League Class D (1905-1906)
Kansas State League Class D (1909-1911)
Kansas State League Class D (1913-1914), Central Kansas League (1908-1912)
Kentucky-Illinois-Tennessee (Kitty) League Class D (1903-1906)
Kentucky-Illinois-Tennessee (Kitty) League Class D (1910-1914)
Kentucky-Illinois-Tennessee (Kitty) League Class D (1916)
Kentucky-Illinois-Tennessee (Kitty) League Class D (1922-1924)
Kentucky-Illinois-Tennessee (Kitty) League Class D (1935-1942)
Kentucky-Illinois-Tennessee (Kitty) League Class D (1946-1955)
Lone Star League Class D (1927-1929)
Lone Star League Class C (1947-1948)
Lone Star League Class A (1977), Gulf States League (1976)
Longhorn League Class D (1947-1950), Class C (1951-1955), Sophomore League (1958-1961), Southwestern League (1956-1957)
Louisiana State League Class D (1920)
Maine State League Class D (1907)
Michigan-Ontario League Class B (1919-1926)
Michigan State League Class D (1902)
Michigan State League Class D (1911-1914), West Michigan League (1910)
Michigan State League Class C (1940-1941)
Middle Atlantic League Class C (1925-1942)
Middle Atlantic League Class C (1946-1951)
Middle Texas League Class D (1914-1915)
Minnesota-Wisconsin League Class D (1909-1910,1912), Class C (1911), Northern League (1908)
Mississippi State League Class D (1921)
Mississippi Valley League Class D (1922-1932), Class B (1933)
Mississippi-Ohio Valley League Class D (1949-1955), Midwest League (1956-present), Illinois State League (1947-1948)
Missouri-Iowa-Nebraska-Kansas (MINK) League Class D (1910-1913)
Missouri State League Class D (1911)
Missouri Valley League Class D (1902-1903), Class C (1904), Western Association (1905-1911)
Missouri Valley League Class C (1905)
Mountain State League Class D (1937-1941), Class C (1942)
Mountain States League Class D (1911-1912)
Mountain States League Class D (1948-1953), Class C (1954)
Nebraska State League Class D (1910-1915)
Nebraska State League Class D (1922-1923)
Nebraska State League Class D (1928-1938), Western League (1939-1941)
Nebraska State League Class D (1956-1959)
New Brunswick-Maine League Class D (1913)
New England League Class B (1902-1915)
New England League Class B (1919)
New England League Class B (1926-1930)
New England League Class B (1933), Northeastern League (1934)
New England League Class B (1946-1949)
New York-New Jersey League Class D (1913), Atlantic League (1914)
New York-Pennsylvania League Class B (1923-1932), Class A (1933-1937), Eastern League (1938-present)
New York State League Class B (1902-1917)
North Atlantic League Class D (1946-1950)
North Carolina League Class C (1902)
North Carolina State League Class D (1913-1917), Carolina Association (1908-1912)
North Carolina State League Class D (1937-1942)
North Carolina State League Class D (1945-1952), Tar Heel League (1953-1954)
North Dakota League Class D (1923)
North Texas League Class D (1905)
North Texas League Class D (1907)
Northeast Arkansas League Class D (1909-1911)
Northeast Arkansas League Class D (1936-1941)
Northeastern League Class B (1934), New England League (1933)
Northern Association Class D (1910)
Northern League Class D (1903-1905), Northern-Copper Country League (1906-1907)
Northern League Class D (1908), Minnesota-Wisconsin League (1909-1912)
Northern League Class C (1913-1916), Class D (1917), Central International League (1912)
Northern League Class D (1933-1940), Class C (1941-1942)
Northern League Class C (1946-1962), Class A (1963-1971)
Northern-Copper Country League Class C (1906), Class D (1907), Copper Country Soo League (1905), Northern League (1903-1905)
Northern State of Indiana League Class D (1909-1911)
Northwest International League Class B (1919), Pacific Coast International League (1918,1920-1921), Western International League (1922)
Northwestern League Class B (1905-1917)
Ohio-Indiana League Class D (1948-1951)
Ohio-Pennsylvania League Class C (1905-1911), Class D (1912)
Ohio State League Class D (1908-1916)
Ohio State League Class D (1936-1941)
Ohio State League Class D (1944-1947)
Oklahoma-Arkansas-Kansas (OAK) League Class D (1907), Oklahoma-Kansas League (1908)
Oklahoma-Kansas League Class D (1908), Oklahoma-Arkansas-Kansas League (1907)
Oklahoma State League Class D (1912)
Oklahoma State League Class D (1922-1924)
Ontario League Class C (1930)
Oregon State League Class D (1904)
Pacific Coast International League Class B (1918,1920-1921), Northwest International League (1919), Western International League (1922)
Pacific National League Class A (1903), Class B (1904), Pacific Northwest League (1902)
Pacific Northwest League Class B (1902), Pacific National League (1903-1904)
Palmetto League Class D (1931)
Panhandle-Pecos Valley League Class D (1923), West Texas League (1920-1922)
Pennsylvania-Ohio-Maryland (POM) League Class D (1906-1907)
Pennsylvania-Ontario-New York (PONY) League (1939-1956), Class D (1939-1956), New York-Pennsylvania League (1957-present)
Pennsylvania State Association Class D (1934-1942)
Pennsylvania-West Virginia League Class D (1908-1909)
Piedmont League Class D (1920), Class C (1921-1931), Class B (1932-1955)
Pioneer League Class C (1939-1942)
Potomac League Class D (1916)
Provincial League Class C (1950-1955)
Quebec-Ontario-Vermont League Class B (1924)
Quebec Provincial League Class B (1940)
Rio Grande Association Class D (1915)
Rio Grande Valley League Class D (1931)
Rio Grande Valley League Class D (1949), Class C (1950)
Rocky Mountain League Class D (1912)
San Joaquin Valley League Class D (1910-1911)
Sooner State League Class D (1947-1957)
Sophomore League Class D (1958-1961), Southwestern League (1956-1957), Longhorn League (1947-1955)
South Atlantic (Sally) League Class C (1904-1917)
South Atlantic (Sally) League Class C (1919-1920), Class B (1921-1930)
South Atlantic (Sally) League Class B (1936-1942)
South Atlantic (Sally) League Class A (1946-1962), Class AA (1963), Southern League (1964-present)
South Carolina League Class D (1907-1908)
South Central League Class D (1906)
South Central League Class D (1912)
South Dakota League Class D (1920,1923), Dakota League (1921-1922)
South Texas League Class C (1903-1906)
Southeastern League Class D (1910-1912)
Southeastern League Class B (1926-1930)
Southeastern League Class B (1932)
Southeastern League Class B (1937-1942)
Southeastern League Class B (1946-1950)
Southern Association Class B (1902-1904), Class A (1905-1935), Class A1 (1936-1945), Class AA (1946-1961)
Southern California League Class D (1913)
Southern California Trolley League Class D (1910)
Southern Illinois League Class D (1910)
Southern Michigan League Class D (1906-1910, 1912-1913), Class C (1911, 1914-1915)
Southwest International League Class C (1951-1952), Arizona-Texas League (1947-1950), Sunset League (1947-1950)
Southwest Iowa League Class D (1903)
Southwest Texas League Class D (1910-1911)
Southwest Washington League Class D (1903-1906)
Southwestern League Class D (1904)
Southwestern League Class D (1921), Class C (1922-1923), Class D (1924-1926)
Southwestern League Class B (1956-1957), Sophomore League (1958-1961), Longhorn League (1947-1955)
Sunset League Class C (1947-1950), Southwest International League (1951-1952)
Tar Heel League Class D (1939-1940)
Tar Heel League Class D (1953-1954), North Carolina State League (1945-1952), Western Carolina League (1948-1952)
Texas Association Class D (1923-1926)
Texas League Class D (1902-1903, 1906), Class C (1904-1905, 1907-1910), Class B (1911-1920), Class A (1921-1935), Class A1 (1936-1942)
Texas-Oklahoma League Class D (1911-1914)
Texas-Oklahoma League Class D (1921-1922)
Texas Valley League Class D (1927-1928)
Texas Valley League Class D (1938)
Tobacco State League Class D (1946-1950)
Tri-State League (PA-DE-NJ) Class B (1907-1914)
Tri-State League (NE-IA-SD) Class D (1924)
Tri-State League (AR-MS-TN) Class D (1925-1926)
Tri-State League (NC-SC-TN) Class B (1946-1955)
Twin Ports League Class E (1943)
Twin States League Class D (1911)
Union Association Class D (1911-1914)
Utah-Idaho League Class C (1926-1928)
Virginia League Class C (1906-1919), Class B (1920-1928)
Virginia League Class D (1939-1940), Class C (1941-1942)
Virginia League Class D (1948-1951)
Virginia Mountain League Class D (1914)
Virginia-North Carolina League Class D (1905)
Virginia Valley League Class D (1910)
Washington State League Class D (1910-1912)
West Dixie League Class C (1934-1935), Dixie League (1933)
West Michigan League Class D (1910), Michigan State League (1911-1914)
West Texas League Class D (1920-1922), Panhandle-Pecos Valley League (1923)
West Texas League Class D (1928-1929)
West Texas-New Mexico League Class D (1937-1942)
West Texas-New Mexico League Class C (1946-1954), Class B (1955)
West Virginia League Class D (1910)
Western Association Class C (1905-1911), Missouri Valley League (1902-1904)
Western Association Class D (1914-1917)
Western Association Class D (1920-1921), Class C (1922-1932)
Western Association Class C (1934-1942)
Western Association Class C (1946-1954)
Western League Class A (1902-1937)
Western League Class D (1939-1941), Nebraska State League (1928-1938)
Western League Class A (1947-1958)
Western Canada League Class D (1907)
Western Canada League Class D (1909-1914)
Western Canada League Class C (1919), Class B (1920-1921)
Western Carolina League Class D (1948-1952), Tar Heel League (1953-1954)
Western Carolina League Class D (1960-1962), South Atlantic League (1980-present), Western Carolinas League (1963-1979)
Western Carolinas League Class A (1963-1979), South Atlantic League (1980-present), Western Carolina League (1960-1962)
Western International League Class B (1922), Pacific Coast International League (1918,1920-1921), Northwest International League (1919)
Western International League Class B (1937-1942)
Western International League Class B (1946-1951), Class A (1952-1954), Northwest League (1955-present)
Western Pennsylvania League Class D (1907)
Western Tri-State League Class D (1912-1914)
Wisconsin-Illinois League Class D (1908-1909), Class C (1910-1914), Wisconsin State League (1905-1907)
Wisconsin State League Class D (1905-1907), Wisconsin-Illinois League (1908-1914)
Wisconsin State League Class D (1940-1942)
Wisconsin State League Class D (1946-1953) 1