|College Conference of Illinois and Wisconsin|
|Former names||College Conference of Illinois|
|Commissioner||Maureen Harty (since 2019)|
CCIW schools have accounted for 46 national championships in NCAA Division III competition, including 15 in men's cross country, six in men's basketball, six in men's outdoor track and field, four in football and men's indoor track and field, three in women's soccer, two in women's outdoor track & field, women's basketball and men's soccer and one apiece in baseball and women's indoor track and field.
Elmhurst College won a pair of Division III women's volleyball championships (1983 and 1985), and North Central College won a women's basketball title (1983) before the conference began sponsorship of women's athletics in 1986-87.
North Central men's cross country won its 13th national title in program history during the fall of 2009, while the North Central men's indoor track & field team captured the 2010 national championship. The Cardinals made it clean sweep by winning the men's outdoor track & field title in the spring of 2010. In addition, the Illinois Wesleyan women's outdoor track & field team, as well as the baseball team, took home national titles, giving the CCIW five national championships during the 2009-10 season.
North Central defended its titles in men's indoor track & field and outdoor track & field in the spring of 2011 while the Cardinals won their second men's cross country title in three seasons in the fall of 2011 and their third-straight indoor track & field title in 2012. Illinois Wesleyan won the conference's second women's basketball national title in 2012.
The conference was formed with nine charter members (Augustana College, Carthage College, Elmhurst College, Illinois College, Illinois Wesleyan University, Lake Forest College, Millikin University, North Central College and Wheaton College) on April 26, 1946, in Jacksonville, Illinois, and opened competition in the 1946-47 academic year as the College Conference of Illinois. In 1967, the name was changed to the College Conference of Illinois and Wisconsin, to recognize Carthage, which moved to Kenosha, Wisconsin in 1962, and Carroll University, which entered the conference in 1955.
The CCIW sponsors 24 sports: baseball, men's and women's basketball, men's and women's cross country, football, men's and women's golf, men's and women's lacrosse, men's and women's soccer, softball, men's and women's swimming, men's and women's tennis, men's and women's indoor track & field, men's and women's outdoor track & field, men's and women's volleyball and wrestling. The most recently added sport is men's volleyball, which starts play in the 2020 season (2019–20 school year).
CCIW membership has experienced several changes since its inception. After Carthage left in 1952, Illinois College withdrew the following year (1953). Elmhurst and Wheaton withdrew following the 1959-60 academic year. Wheaton re-joined for all sports but football in 1967 (and for football in 1970). Elmhurst re-joined in the fall of 1967 for all sports but football (and for football in 1968). Carroll joined during the 1955 spring sports season (1954-55 academic season). Carthage returned in the fall of 1961, and North Park University entered the following fall (1962). Lake Forest dropped out at the end of the 1962-63 season. The last member to leave the CCIW was Carroll following the 1991-92 season.Carroll returned to the CCIW in 2016 In 2007, Rose–Hulman Institute of Technology, located in Terre Haute, Indiana, joined the CCIW as an associate member for men's and women's swimming. After 2017, Rose–Hulman left as an associate member shortly before its full-time home of the Heartland Collegiate Athletic Conference announced it would add swimming.
The league currently has 9 full members.
|Augustana College||Rock Island, Illinois
|Carroll University||Waukesha, Wisconsin
Lady Pioneers (women's)
|Carthage College||Kenosha, Wisconsin
|Red Men (men's)
Lady Reds (women's)
|Elmhurst College||Elmhurst, Illinois
|Bluejays||1871||Private/United Church of Christ||2,748||19463|
|Illinois Wesleyan University||Bloomington, Illinois
|Millikin University||Decatur, Illinois
|North Central College||Naperville, Illinois
|North Park University||Chicago, Illinois
|Wheaton College||Wheaton, Illinois
- - Carthage left the CCIW in 1951–52 season; but rejoined in the 1961–62 season.
- - Carroll left the CCIW in 1992–93 season; but rejoined in the 2016–17 season.
- - Elmhurst left the CCIW after the 1959–60 season; but rejoined in the 1967–68 season (football later re-joined in the 1968–69 season).
- - Wheaton left the CCIW after the 1959–60 season; but rejoined in the 1967–68 season (football later re-joined in the 1970–71 season).
The "Joined" column indicates the calendar year of entry, which for spring sports will differ from the first season of competition.
|University of Dubuque||Dubuque, Iowa
|Concordia University Wisconsin||Mequon, Wisconsin||Falcons||1881||Private||7,721||2016||NACC||Wrestling|
|Lakeland University||Plymouth, Wisconsin||Muskies||1862||Private||3,973||2016||NACC||Wrestling|
|Milwaukee School of Engineering||Milwaukee, Wisconsin||Raiders||1903||Private||2,823||2016||NACC||Wrestling|
|University of Chicago||Chicago, Illinois
|Maroons||1890||Private||15,276||2018||UAA||Women's lacrosse |
|Washington University in St. Louis||St. Louis, Missouri
|Greenville University||Greenville, Illinois
|Loras College||Dubuque, Iowa
|Illinois College||Jacksonville, Illinois||Blueboys||1829||Private||973||1946||1953||Midwest|
|Lake Forest College||Lake Forest, Illinois||Foresters||1857||Private||1,441||1946||1963||Midwest|
Former affiliate members
|Rose–Hulman Institute of Technology||Terre Haute, Indiana||Fightin' Engineers||1874||Private||1,840||2007||2017||Swimming||HCAC|
In 2015, men's and women's lacrosse were added as sanctioned sports by the CCIW. The CCIW announced the inclusion of Men's Volleyball for the 2020 season.
The CCIW sponsors championships in the following sports:
|Track and field (indoor)|
|Track and field (outdoor)|
|2018||Men's cross country||North Central College|
|2017||Men's cross country||North Central College|
|2016||Men's cross country||North Central College|
|2014||Men's cross country||North Central College|
|2012||Men's cross country||North Central College|
|2011||Men's cross country||North Central College|
|2012||Women's basketball||Illinois Wesleyan|
|2010||Men's outdoor track and field||North Central|
|2010||Men's indoor track and field||North Central|
|2009||Men's cross country||North Central|
|2008||Women's indoor track and field||Illinois Wesleyan|
|2008||Women's outdoor track and field||Illinois Wesleyan|
|2000||Men's outdoor track and field||North Central|
|1999||Men's cross country||North Central|
|1998||Men's cross country||North Central|
|1998||Men's outdoor track and field||North Central|
|1997||Men's basketball||Illinois Wesleyan|
|1997||Men's cross country||North Central|
|1994||Men's outdoor track and field||North Central|
|1993||Men's cross country||North Central|
|1992||Men's cross country||North Central|
|1989||Men's outdoor track and field||North Central|
|1989||Men's indoor track and field||North Central|
|1987||Men's basketball||North Park|
|1987||Men's cross country||North Central|
|1985||Men's basketball||North Park|
|1983||Women's basketball||North Central|
|1982||Men's cross country||North Central|
|1981||Men's cross country||North Central|
|1980||Men's basketball||North Park|
|1979||Men's basketball||North Park|
|1979||Men's cross country||North Central|
|1978||Men's basketball||North Park|
|1978||Men's cross country||North Central|
|1976||Men's cross country||North Central|
|1975||Men's cross country||North Central|
- "CCIW History". www.cciw.org. Retrieved 2010-06-28.
- "CCIW Announces the Addition of Men's Volleyball; Greenville and Loras Added as Associate Members" (Press release). College Conference of Illinois and Wisconsin. December 12, 2018. Retrieved December 28, 2018.
- "CCIW History". www.cciw.org. Retrieved 2010-06-28.
- "Rose leaves CCIW, but HCAC could add swimming just in time". www.cciw.org. Retrieved 2018-12-11.
- "Wash U, Chicago already leaving SAA". [d3football.com]. June 12, 2015. Retrieved November 15, 2015.