Montana and Wyoming
| 1927-39 | Louis H. Fligman, Helena |
| 1940-48 | Ernest D. Hitchcock, Great Falls |
| 1948-57 | Harold W. Greg, Butte |
| 1957-59 | Wayne Gordon, Billings |
| 1959-66 | John A. Layne, Great Falls |
| 1966-72 | Alfred M. Fulton, Jr., Billings |
| 1972-76 | Allan L. Goulding, Billings |
| 1976-79 | Francis J. Allaire, Great Falls |
| 1979- | CONTINUED AS separate state chapters |
Montana
| 1979-80 | Francis J. Allaire, Great Falls |
| 1980-84 | William A. Reynolds, Missoula |
| 1984-88 | Warren D. Bowman, Jr., Billings |
| 1988-92 | Ronald H. Smith, Billings |
| 1992-96 | Ronald V. Loge, Dillon |
| 1996-2000 | Kenneth V. Eden, Helena |
| 2000-2004 | Phillip E. Griffin, JR., Billings |
| 2004-2008 | Robert G. Byron, Hardin |
| 2008-2012 | Jim Yturri, Great Falls |
| 2012-2016 | Jay L. Larson, Helena |
| 2016-2020 | Pamela J. Hiebert, Bozeman |
| 2020-2024 | Steven Gerstner, Billings |
| 2024-2028 | Michael Spinelli, Bozeman |