Users
| Country | Organization name | Model | Caliber |
|---|---|---|---|
| Albania | Albanian Joint Forces Command | - | - |
| RENEA | USP Tactical | - | |
| Australia | Australian Federal Police Air Security Officers | - | 9mm |
| Western Australia Police Tactical Response Group | - | - | |
| Tactical Assault Group of the Australian Army | - | - | |
| Queensland Police Special Emergency Response Team | - | - | |
| Victoria Police Special Operations Group | - | - | |
| Cyprus | Cyprus National Guard | USP | 9mm |
| Cyprus Police | USP | 9mm | |
| Denmark | Danish Police | USP Compact | 9 mm |
| Jægerkorpset of the Royal Danish Army | USP9 SD | 9 mm | |
| Estonia | Estonian Armed Forces | USP | 9 mm |
| France | French Navy (PA HK Marine) | USP Compact | - |
| Recherche Aéroportée et Actions Spécialisées (RAPAS) | USP Tactical | - | |
| Germany | Bundeswehr | P8 USP Tactical (P12) |
- |
| Landespolizei | USP Compact (P10) | - | |
| Greece | Hellenic Coast Guard | USP Compact | 9mm |
| Hellenic Police | USP Compact | 9mm | |
| Ireland | Irish Defence Forces (replaced Browning Hi-Power) | - | 9mm |
| Japan | Japanese Special Forces Group | - | |
| Lithuania | Lithuanian Armed Forces | - | 9mm |
| Luxembourg | Unité Spéciale de la Police of the Grand Ducal Police | - | - |
| Malaysia | Pasukan Gerakan Khas (PGK) counter-terrorism group of the Royal Malaysia Police | USP Compact USP Tactical SD |
9mm |
| New Zealand | New Zealand Special Air Service of the New Zealand Defence Force | USP Tactical | 9mm |
| Poland | Grupa Reagowania Operacyjno-Manewrowego (GROM) of the Polish Army | USP family | - |
| Portugal | Public Security Police | USP family | - |
| Republican National Guard | USP family | - | |
| Portuguese Air Force | USP family | 9mm | |
| Singapore | Special Operations Command of the Singapore Police Force | USP Compact | - |
| South Africa | South African Police Service Special Task Force | USP USP Compact |
9mm |
| Spain | Spanish Armed Forces | - | - |
| Grupo Especial de Operaciones (GEO) of the Cuerpo Nacional de Policía | USP Compact | - | |
| Guardia Civil | USP Compact | - | |
| United States | Maine State Police | USP45 | .45 ACP |
| Santa Monica, CA Police Department | USP45 USP9 |
.45 ACP 9mm |
|
| United States Border Patrol | USP40 | .40 S&W | |
| Uruguay | Policia Nacional del Uruguay | USP | 9mm |
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