If you have information regarding the death of an alumni, faculty or staff member, please email Paul Scott at pjscott51@flaget.org or Mark McWhorter at mmcwhorter@iglou.com.
| Last Name | First Name | Class/Role | Date of Death |
|---|---|---|---|
| Lawler | John Edward | 1945 | March 25, 2007 |
| Lawrence | Eugene H. | 1950 | November 27, 2016 |
| Layman | Donald P. | 1953 | |
| Layman | John D | 1952 | October 2, 2025 |
| Leahy | James H. | 1951 | |
| Leahy | Michael A. | 1958 | February 1, 2020 |
| Leake | Francis J. | 1969 | February 4, 1986 |
| Leake | John | 1962 | |
| Ledweg | John R. | 1956 | |
| Lee | Samuel R. | 1972 | January 23, 2016 |
| Leet | Kenneth D. | 1958 | December 25, 2015 |
| Leezer | J. Ronald | 1952 | November 12, 2015 |
| Lehan | Daniel M. | 1949 | November 15, 2015 |
| Lehmann | William O. | 1958 | June 1, 2017 |
| Lehmenkuler Jr. | John R. | 1960 | July 21, 2009 |
| Leitsch | Richard J. | 1953 | |
| Lemke | John P | 1962 | December 2, 2023 |
| Lenahan | Rev. John B. | Priest | June 22, 2010 |
| Lenberger | Robert L. | 1949 | August 15, 2002 |
| Lenhart | Arl "Woody | 1965 | September 29, 2021 |
| Lennon | Robert E. | 1953 | |
| Lentini | Gaspar L. | 1953 | October 17, 2015 |
| Lentz | Eugene J. "Geno | 1949 | September 3, 2009 |
| Leonard | John F. | 1963 | |
| Leonard | Joseph S. | 1965 | |
| Leslie | Richard F. | Brother | |
| Lester | Lloyd M. | 1953 | July 20, 2009 |
| Lewis | James P. | 1964 | |
| Lickteig | Charles T. | 1952 | |
| Lillie | Darryl D. | 1962 | September 28, 1989 |
| Lillie | Donald E. | 1967 | February 25, 2015 |
| Lillie | William Westly | 1959 | December 1, 2002 |
| Lilly | Ralph M. | 1971 | December 4, 2021 |
| Limanni | Joseph Allen | 1954 | July 7, 1995 |
| Lincoln | Edwin Thomas | 1954 | January 20, 2023 |
| Lindauer | Jerry D. | 1953 | January 20, 2012 |
| Lindeman | John A. | 1952 | December 23, 2011 |
| Lindle | Louis F. | 1952 | April 29, 2013 |
| Lindsey | Millard R. | 1966 | |
| Lindsey | Stephen "Steve" Rae | 1970 | June 7, 2020 |
| Lindsey Jr. | Millard Roosevelt | 1966 | September 7, 2000 |
| Linehan | Daniel L. | 1961 | June 24, 2011 |
| Link | George A. | 1946 | |
| Linker | David M. | 1967 | October 11, 2014 |
| Linker | Gerald L. | 1955 | November 26, 2009 |
| Linton | Robert Francis | 1952 | October 20, 1996 |
| Lish | Donald J. | 1952 | |
| Liston | Danny Joseph | 1970 | February 3, 2025 |
| Liston | James Allen | 1969 | May 5, 2004 |
| Liston | James J. | 1947 | August 23, 2011 |