
The Illinois Council of Teachers of Mathematics (ICTM) was organized in 1949 to create and foster greater interest in the teaching of mathematics at all grade levels. A small group of 90 interested mathematics teachers met that year at the University of Illinois to determine the structure for a state mathematics association.
The purposes of ICTM, as stated in the By-laws, are to encourage an active interest in all areas of mathematics and mathematics education, to enhance the teaching and learning of mathematics and the role of mathematics in other disciplines, to promote research in the teaching and learning of mathematics, and to provide opportunities for exchange of views regarding the teaching and learning of mathematics.
| R.A. (Reuben) Baumgartner | 1948-49 | Irene Jinks | 1977-78 | |
| Helen Schneider | 1949-50 | Norman Young | 1978-79 | |
| C.N. Mills | 1950-51 | Jerry Cummins | 1979-80 | |
| Eugene Hellmich | 1951-52 | Phares O'Daffer | 1980-81 | |
| Henry Swain | 1952-53 | Shirley Przybylski | 1981-82 | |
| Mildred Cole | 1953-54 | Terry Popp | 1982-83 | |
| Frank Allen | 1954-55 | Paul Trafton | 1983-84 | |
| Glenn H. Ayre |
1955-56 | John McConnell | 1984-85 | |
| Clarence Fugua | 1956-57 | Paula Filliman | 1985-86 | |
| Donna Norton Holroyd | 1957-58 | Cathy Cook | 1986-87 | |
| LeRoy Sachs | 1958-59 | Sandra Spalt-Fulte | 1987-88 | |
| Mary Louise Fisher | 1959-60 | Marvin Doubet | 1988-89 | |
| Francis Brown | 1960-61 | Katherine Pedersen | 1989-90 | |
| Jane Jaeger | 1961-62 | Dennis Filliman | 1990-91 | |
| Joseph Stipanowich | 1962-63 | Linda Bailey | 1991-92 | |
| Houston Kirk | 1963-64 | Cheryl Hawker | 1992-93 | |
| Alice Hart | 1964-65 | John Hester | 1993-94 | |
| Charles Schulz | 1965-66 | Randy Pippen | 1994-95 | |
| (Alphonso) DiPietro | 1966-67 | Steven Viktora | 1995-96 | |
| James Ulrich | 1967-68 | Richard Wyllie | 1996-97 | |
| Jerry A. Shryock | 1968-69 | Sandra Dawson | 1997-98 | |
| Delphine Dupee | 1969-70 | R.B. Thompson | 1998-99 | |
| Richard Crumley | 1970-71 | Mary Modene | 1999-01 | |
| Ruth Anderson | 1971-72 | Sue Pippen | 2001-03 | |
| John Schumaker | 1972-73 | Robert Urbain | 2003-05 | |
| Donald R. Herrick | 1973-74 | Jackie Cox | 2005-07 | |
| Anne Griffin | 1974-75 | Karen Holly | 2007-09 | |
| George Grisham | 1975-76 | Fern Tribbey | 2009-11 | |
| Alan Foster | 1976-77 | Don Porzio | 2011-13 |