The Illinois PGA Championship is a golf tournament that is conducted by the Illinois PGA (Professional Golfers' Association). The 54-hole, stroke play Championship conducted over three days is the premier member event on the Illinois PGA calendar. The tournament is open to all "Class A" Illinois PGA Professionals in good standing with the PGA of America.

The first Illinois PGA Championship was held in 1922 and won by Eddie Loos. In addition to the first place purse money, the winner is awarded the Jim Kemper Cup, which was donated by Jim Kemper, the former president and chairman of the board of Kemper Insurance Company.

The Illinois PGA Championship is a 54-hole stroke-play event. Following 36 holes of play, the field is cut to the low 50 scores plus ties. In the event of a tie for the Championship, there is a three-hole, total stroke playoff. If the contestants remain tied after three (3) holes, the playoff will continue on a sudden death basis.

The Illinois PGA Champion, along with a pre-determined number of finishers (based on total entries received), receive an exemption to play in the PGA Professional National Championship the following year.

During the first round of the Illinois PGA Championship, all competitors are asked to make a voluntary donation at registration in support of Patriot Golf Day – a joint initiative of the PGA of America and the United States Golf Association (USGA) that supports the Folds of Honor Foundation which provides post-secondary educational scholarships for children and spouses of military service men and women killed or disabled while serving our great nation. Contributions are also accepted through subsequent rounds. At the conclusion of the Championship, the Illinois PGA matches all funds donated by its members.

• ^PO = Won in playoff

The following players have won the Illinois PGA Championship multiple times:

• 14 wins:
  • Mike Small – 2001, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2013, 2014, 2016, 2020, 2023
• 6 wins
  • Johnny Revolta – 1936, 1937, 1938, 1941, 1942, 1947
• 5 wins:
  • Bill Ogden – 1953, 1957, 1960, 1971, 1972
• 4 wins:
  • Jim Foulis – 1929, 1933, 1943, 1946
  • Gary Groh – 1983, 1986, 1989, 2002
• 3 wins:
  • Errie Ball – 1949, 1955, 1965
  • Steve Benson – 1982, 1984, 1994
  • Al Espinosa – 1927, 1928, 1930
  • Tony Holguin – 1954, 1962, 1970
  • Jock Hutchinson – 1923, 1925, 1926
  • Jim Sobb – 1995, 1999, 2000
  • Bob Zender – 1976, 1977, 1978
• 2 wins:
  • Bob Ackerman – 1988, 1993
  • Doug Bauman – 1996, 1997
  • Harry Cooper – 1932, 1934
  • Rick Dalpos – 1990, 1991
  • Bob Harris – 1959, 1961
  • Dick Hart – 1963, 1966
  • George Keyes - 1956, 1967
  • Eddie Loos – 1922, 1924
  • Chuck Malchaski – 1958, 1968

• PGA of America – Illinois Section