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 |
|---|---|---|---|
| Mooney | Joseph I. | 1949 | |
| Mooney | Patrick Michael | 1967 | March 31, 2022 |
| Mooney | Thomas G. | 1957 | October 11, 1991 |
| Mooney, C.F.X. | Br. Adrian | Brother | |
| Moore | Charles Everett | 1957 | August 14, 2020 |
| Moore | John Curtis | 1964 | January 26, 2021 |
| Moore | Joseph W. | 1955 | |
| Moore | Kenneth E. | 1952 | June 10, 2017 |
| Moore | William E. | 1961 | August 7, 2007 |
| Moorman, Jr. | Frank L. | 1967 | September 14, 1997 |
| Moran, C.F.X. | Br. Casimir | Brother | |
| Moriarty | Edward J. | 1950 | |
| Moriarty | George H. | 1949 | January 18, 2006 |
| Moriarty | James Thomas | 1947 | December 15, 1995 |
| Morris | George E. | 1964 | December 23, 2016 |
| Morris | James F. | Lay Faculty | June 3, 2023 |
| Morris | Thomas M. | 1953 | |
| Morris | Yolanda L. | 1974 | December 31, 2023 |
| Morris Jr. | Kenneth Edward | 1961 | November 20, 2022 |
| Morrison | Thomas Lamont | 1968 | October 24, 2007 |
| Mudd | Charles Joseph | 1960 | April 27, 2005 |
| Mudd | Charles L. | 1949 | June 23, 2012 |
| Mudd | Edward Joseph | 1951 | August 5, 2000 |
| Mudd | James B. | 1949 | July 29, 2010 |
| Mudd | James Edwin | 1963 | June 18, 2003 |
| Mudd | Joseph E. | 1948 | May 24, 2005 |
| Mudd | Joseph N. | 1948 | November 9, 2018 |
| Mudd | Paul D | 1969 | June 14, 2025 |
| Mudd | Robert F. | 1959 | April 18, 2020 |
| Mudd | Roy L. | 1955 | March 20, 2006 |
| Mudd | William Monroe | 1963 | August 29, 2001 |
| Mueller | Daniel L. | 1959 | |
| Mueller | Gerard Frederick | 1952 | December 18, 2003 |
| Mueller | Phillip L. | 1956 | May 13, 2016 |
| Muench | Alan R. | 1948 | December 16, 2020 |
| Muench | Albert Patrick | 1949 | January 2, 2004 |
| Mueninghoff | Justin R. | 1958 | January 14, 2017 |
| Mueninghoff | Robert L. | 1953 | August 24, 1996 |
| Mueninghoff | William Joseph | 1954 | October 23, 2007 |
| Mulhall | James A. | 1951 | August 24, 2000 |
| Mullican | Dr. James S. | 1948 | August 6, 2010 |
| Mulligan | Edward G. | 1946 | |
| Mulligan | W. David | 1964 | |
| Mulloy | Robert J. | 1950 | April 17, 1986 |
| Mumford | James E. | 1965 | March 10, 2011 |
| Mumford | Michael J. | 1967 | March 23, 2017 |
| Munroe, C.F.X. | Br. More | Brother | |
| Murphy | Charles D. | 1949 | |
| Murphy | James Bernard | 1961 | December 26, 1985 |
| Murphy | James Robert "Jimmy | 1972 | August 29, 2023 |