This is a list of notable private security companies.
Africa
Oceania
Australia
- Paladin Group (private military contractor)
- Wilson Security
Asia
Europe
Americas
Canada
- GardaWorld
- Canadian Corps of Commissionaires
United States
- ADT Security Services
- Allied Universal
- G4S Secure Solutions
- Inter-Con Security
- Monitronics
- Paragon Systems
See also
- List of private military companies
- List of non-governmental paramilitary organizations
- Computer security companies (category)