# List of Illinois High School Association member conferences

The following is a list of Illinois High School Association member conferences. Schools that belong to these conferences compete with each other on a local level in athletics and non-athletic activities. As of the 2023-24 school year, there are 70 conferences within the IHSA.

## Current Conferences

* Apollo Conference
* Big Northern Conference
* Big Twelve Conference
* Black Diamond Conference
* Cahokia Conference (contains three divisions)
* Central Illinois Conference
* Central State Eight Conference
* Central Suburban League (contains two divisions)
* Chicago Catholic League (contains two divisions)
* Chicago Prep Conference
* Chicago Public High School League (contains ten divisions)
* Chicagoland Christian Conference
* DuKane Conference
* DuPage Valley Conference
* East Central Illinois Conference
* East Suburban Catholic Conference
* Egyptian Illini Conference
* Fox Valley Conference
* Gateway Metro Conference
* Girls Catholic Athletic Conference
* Greater Egyptian Conference
* Heart of Illinois Conference
* Illini Prairie Conference
* Illinois Central Eight Conference
* Independent School League
* Inter County Athletic Conference
* Interstate Eight Conference
* Kishwaukee River Conference
* Lake Shore Athletic Conference
* Lincoln Prairie Conference
* Lincoln Trail Conference
* Little Illini Conference
* Little Okaw Valley Conference
* Little Ten Conference
* Metropolitan Prep Conference
* Mid-Illini Conference
* Midland Trail Conference
* Mid-Suburban League (contains two divisions)
* Mississippi Valley Conference
* MSM Conference
* National Trail Conference
* Noble Athletic Conference
* North Suburban Conference
* Northeastern Athletic Conference
* Northern Illinois Conference (NIC-10)
* Northern Lake County Conference
* Northwest Upstate Illini Conference (contains two divisions)
* Pike County Conference
* Prairieland Conference
* River Valley Conference
* Sangamo Conference
* South Central Conference (Illinois)
* South Egyptian Conference
* South Seven Conference
* South Suburban Conference
* Southern Illinois River-to-River Conference (with Mississippi and Ohio River divisions)
* Southland Athletic Conference
* Southwest Prairie Conference (contains two divisions)
* Southwest Suburban Conference
* Southwestern Conference
* Three Rivers Conference
* Tomahawk Conference (Illinois)
* Tri-County Conference
* Upstate Eight Conference (contains two divisions)
* Vermilion Valley Conference
* West Central Conference
* West Suburban Conference (contains two divisions)
* Western Big 6 Conference
* Western Illinois Valley Conference (contains two divisions)

## Former conferences

* Ambraw Valley Conference (1945-1955)
* Big 8 (1980-1995)
* Big Rivers Conference (football-only) (1999-2012)
* Bi-County Conference (1917-1919)
* Bi-County Conference (1970s-1998)
* Blackhawk Conference (West) (1934-1990)
* Blackhawk Conference (North) (1947-1972)
* Bureau Valley Conference (1970s-1990s)
* Capitol Conference (1964-1982)
* Cenois Conference (1963-1969)
* Central Conference (1956-1958)
* Central Egyptian Conference (1929-1940)
* Chicagoland Prep Conference (1961-1969)
* Coal Belt Conference (1946-1956)
* Cook County High School League (1889–1913)
* Corn Belt Conference (1950–2017)
* Des Plaines Valley Conference (1963-1985)
* East Okaw Conference (1981-1995)
* Eastern Illinois Conference (1952-1969)
* Four Rivers Conference (2000-2006)
* Fox Valley Conference (1952-1966)
* Gateway East Conference (1979-1983)
* Greater Midwestern Conference (1983-1986)
* Heartland Conference (Illinois) (1978-1982)
* Heart of Illinois Conference (1970s) (1972–1978)
* Illini Central Conference (1985-1998)
* Illini 8 Conference (1966-1981)
* Illini Valley Conference (North Central) (1970-1972)
* Illini Valley Conference (South Central) (1928-1973)
* Illio Conference (1952-1975)
* Illowa Conference (1952-1974)
* Indian Valley Conference (1976-1994)
* Iroquois Conference (1970s-1980s)
* Kane County Conference (????-1917)
* Kankakee Valley Conference (1950-1979)
* La Moine Valley Conference (1952-1967)
* Little 6 Conference (1952–1975)
* Little 7 Conference (1921–1995)
* Little 8 Conference (North Central) (1921–1975)
* Little 8 Conference (Far North) (1920s–1980)
* Little 8 Conference (Northeast) (1919–19??)
* Little 8 Conference (Northwest) (1918–192?)
* Little 8 Conference (Southwest) (????–????)
* Little Egypt Conference (1960s-1970s)
* Little Five Conference (1923-1939)
* Little Four Conference (19??'s-1948)
* Meridian Conference (Central Illinois) (1959-1993)
* Meridian Conference (Northern Illinois) (????-????)
* Metro Catholic Conference (1960-1965)
* Metro Suburban Conference (2006-2024)
* Mid Northern Conference (1972-1995)
* Mid-South Conference (1983-2008)
* Mid-State Conference (1944-1997)
* Mid-State Six Conference (196?-2015)
* Midwest Conference (1948-1970)
* Midwestern Conference (1952-1970)
* Mississippi Valley Conference (1957-1968)
* New Salem Conference
* North Central Illinois Conference (1929-2011)
* North Egypt Conference (1938-2003)
* North Shore Conference (1904-1914)
* North Six Conference (1939-1946)
* Northern Illinois Big 12 Conference (2010-2018)
* Northwest Conference (1963-1974)
* Northwest Illinois Conference (NWIC) (1974-1996)
* Northwest 7 Conference (1972-1973)
* Northwest 8 Conference (1977-1990)
* Northwest Suburban Conference (1925-1997)
* Okaw Valley Conference (1950s-2017)
* Olympic Conference (1976-2010)
* PMSC Conference (1961-1973)
* Prairie State Conference (1985-????)
* Quad Cities Metro Conference (1950-1977)
* River Trails Conference (1990-1995)
* Rock River (Valley) Conference (1924-1948)
* Route 72 Conference (1952-1972)
* Sangamon Valley Conference (1948-2021)
* SHARK Conference (1946-1982)
* SICA — (South Inter-Conference Association, dissolved 2006)
* Southeast Suburban Conference (1962-1972)
* Southern Conference (IHSA) (????-????)
* Southern Illini Conference (1957-1974)
* Southern Illini Conference (1986-1993)
* Southwest Egyptian Conference (????-1993)
* Spoon River Conference (1959-1985)
* Stephenson County Conference (1958-1963) (Renamed "Northwest Illinois Conference")
* Suburban Catholic Conference (1960-1973)
* Suburban Catholic Conference (2009-2015)
* Suburban League (1913–1975)
* Suburban Prairie Conference (1995-2005)
* SWANI Conference (1946-1953)
* Tollway Athletic Conference
* Trailblazer Conference (1982-1984)
* Tri State Conference (1932-1935)
* Two Rivers Conference (19??-1958)
* United Conference (1958-1963)
* Upstate Illini Conference (1974-1976)
* Upstate Illini Conference (1991-2000)
* US Grant Conference (1950-1958)
* Vermilion Valley Conference (1950-1981)
* Wauseca Conference (1928-1989)
* West Prairie Trail Conference
* Western Area Conference (1974-1996)
* Western Athletic Conference (1908-1921)
* Western Sun Conference (2006-2010)
* Western Suburban Athletic Conference (1903-1910)
* Western Suburban Catholic Conference (1974-1988)
* Wilco Conference (1959-1973)
* Wil-Ro-Kee Conference (1954-1959) (Renamed "Kankakee Valley Conference" in 1960)