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American Mideast Conference (1949–2012) (Defunct conferences)
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Arkansas Intercollegiate Conference (1928–1995) (Defunct conferences)
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Central States Intercollegiate Conference (1976-1989) (Defunct conferences)
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Dakota Athletic Conference (2000–2012) (Defunct conferences)
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Eastern Intercollegiate Athletic Conference (closed in 2003) (Defunct conferences)
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Evergreen Conference (1948–1984) (Defunct conferences)
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Great Plains Athletic Conference (1972–1976) (Defunct conferences)
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Hoosier–Buckeye Conference (1948–1985) (Defunct conferences)
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Midlands Collegiate Athletic Conference (1994–2015) (Defunct conferences)
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Midwest Collegiate Conference (1988–2015) (Defunct conferences)
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Missouri College Athletic Union (1924–1970) (Defunct conferences)
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Nebraska College Conference (1916–1976) (Defunct conferences)
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North Dakota College Athletic Conference (closed in 2000), merged with South Dakota Intercollegiate Conference to form Dakota Athletic Conference (Defunct conferences)
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Oklahoma Collegiate Athletic Conference (1929–1973) (Defunct conferences)
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Oklahoma Intercollegiate Conference (1974–1997) (Defunct conferences)
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Pacific Northwest Athletic Conference (1984–1998) (Defunct conferences)
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South Dakota Intercollegiate Conference (closed in 2000), merged with North Dakota College Athletic Conference to form Dakota Athletic Conference (Defunct conferences)
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South East Atlantic Conference (2004–2008), football only, members became NAIA football independents (Defunct conferences)
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Sunrise Athletic Conference (2002–2011) (Defunct conferences)
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TranSouth Athletic Conference (1996–2013) (Defunct conferences)
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Tri-State Conference (1960–1978) (Defunct conferences)
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Volunteer State Athletic Conference (1940s–early 1980s) (Defunct conferences)
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West Virginia Intercollegiate Athletic Conference (1924–2013), transferred to the NCAA in 1994 (Defunct conferences)
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Central Atlantic Collegiate Conference (1961–2002) (Former conferences)
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Dixie Conference (1963–1973), became the USA South Athletic Conference in 2003 (Former conferences)
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Conference Carolinas (1930–1995), known as Carolinas Intercollegiate Athletic Conference after 1961, held dual membership with the NCAA for two years starting in 1993 (Former conferences)
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Northern Sun Intercollegiate Conference (1932–1992), known as Northern Intercollegiate Conference after 1962 (Former conferences)
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Northwest Conference (1926–1996), Pacific Northwest Conference before 1984 and Northwest Conference of Independent Colleges until 1996 (Former conferences)
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Upper Midwest Athletic Conference (1972–2008) (Former conferences)
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