| John Kovach | | Ashland Police Dept | 108 | 03/24/1977 | |
| John Matz | Email hidden; Javascript is required. | Winnebago Cnty Sheriffs Ofc | 254 | 09/20/2013 | SW |
| John Mizerka | | Beloit Police Dept | 095 | 12/06/1973 | R |
| John Niebuhr | Email hidden; Javascript is required. | Vilas Cnty Sheriffs Ofc | 152 | 03/25/1988 | R |
| John Olsen | | Janesville Police Dept | 246 | 09/16/2011 | R |
| John Pledl | | Menomonee Falls Police Dept | 172 | 03/26/1993 | R- Retired |
| John Polzin | Email hidden; Javascript is required. | Racine Police Dept | 250 | 09/21/2012 | R |
| John Reiff | | Walworth Cnty Sheriffs Ofc | 120 | 03/21/1980 | |
| John Rousseau | Email hidden; Javascript is required. | Brown County Sherriff's Office | 290 | 06/06/2024 | SW- Sworn |
| John Sayers | | Libertyville IL Police Dept | 124 | 03/20/1981 | D |
| John Secanky | | Racine Police Dept | 049 | 06/06/1952 | |
| John Sheridan | | Hanover Police Dept | 130 | 09/24/1982 | |
| John Shilts | Email hidden; Javascript is required. | St Croix Cnty Sheriffs Ofc | 226 | 09/15/2006 | R |
| John Stapleton | Email hidden; Javascript is required. | River Falls Police Dept | 204 | 03/16/2001 | R |
| John Sterba | | WI State Patrol | 077 | 05/25/1966 | D |
| John Stroik | | Marshfield Police Dept | 176 | 03/25/1994 | R |
| John Sweeney | Email hidden; Javascript is required. | Oneida Cnty Sheriff's Ofc | 225 | 06/09/2006 | R |
| John Zindar | | Sheboygan Police Dept | 076 | 11/03/1965 | D |
| John (Tony) Barthuly | Email hidden; Javascript is required. | Fond du Lac Police Dept | 186 | 09/13/1996 | R |
| Johnnie Diamante | | Univ of WI Madison Police Dept | 218 | 09/03/2004 | R |
| Johnnie Smith | | Milwaukee Police Dept | 158 | 09/22/1989 | |
| Jon Hoffmann | | Sheboygan Cnty Sheriffs Ofc | 158 | 09/22/1989 | R |
| Jonathan Aubart | Email hidden; Javascript is required. | River Falls Police Dept | 256 | 03/28/2014 | R |
| Jonathon Marsh | Email hidden; Javascript is required. | US Forest Service | 139 | 12/14/1984 | R |
| Joseph Balles | Email hidden; Javascript is required. | Madison Police Dept | 227 | 12/15/2006 | R |
