| Peter Ostrom | | Superior Police Dept | 010 | 04/01/1939 | |
| Wallace Oneill | | Univ of WI - Eau Claire Public Safety | 112 | 03/24/1978 | |
| Richard O'Leary | | Janesville Police Dept | 098 | 09/12/1974 | |
| James Obrien | | Rice Lake Police Dept | 068 | 11/08/1961 | |
| Ronald Ninnemann | | WI Dept of Justice/DCI | 150 | 09/25/1987 | |
| Loyal Nelsen | | Green Bay Police Dept | 079 | 06/07/0967 | |
| Vernon Mueller | | Eau Claire Police Dept | 110 | 09/23/1977 | |
| Randolph Morrissette | | Hudson Police Dept | 149 | 06/12/1987 | |
| Gary Moore | | Univ of WI | 094 | 09/13/1973 | |
| Ronald Mikolic | | Sheboygan Cnty Sheriffs Ofc | 064 | 11/04/1959 | |
| Eugene Michalski | | WI Dept of Justice/DCI | 075 | 05/26/1965 | |
| Thoams Meronek | | Superior Police Dept | 099 | 12/05/1974 | |
| Benjamin Mendez | | Wisconsin State Patrol | 170 | 09/04/1992 | |
| Theodore Meekma | | Wisconsin State Patrol | 103 | 12/11/1975 | |
| Thomas Mcallister | | Bayfield Cnty Sheriffs Ofc | 102 | 09/25/1975 | |
| Frederick Mathews | | Green Bay Police Dept | 083 | 05/28/1969 | |
| Elwood Mason | | Marathon Cnty Sheriffs Ofc | 102 | 09/25/1975 | |
| Roy Martinson | | Superior Police Dept | 090 | 09/15/1972 | |
| Bruce Marco | | LaCrosse Police Dept | 114 | 09/22/1978 | |
| Ralph Marcheske | | Eagle River Police Dept | 118 | 09/14/1979 | |
| Floyd Maloney | | Chippewa Falls Police Dept | 029 | 07/21/1945 | |
| Leonard Lowe | | Chippewa Falls Police Dept | 126 | 09/11/1981 | |
| Jeffrey Lorentz | | Wisconsin State Patrol | 194 | 09/11/1998 | |
| Robert Loeffler | | La Crosse Police Dept | 059 | 06/06/1957 | |
| James Litwin | | Racine Cnty Sheriffs Ofc | 127 | 12/11/1981 | |
