This is a list of notable private security companies.
Africa
Oceania
Australia
- Paladin Group (private military contractor)
- Wilson Security
Asia
Europe
Denmark
Ireland
Spain
Sweden
- Securitas AB
Switzerland
- ImmuniWeb
- Securitas AG
United Kingdom
- Aegis Defense Services
- Control Risks
- Corps of Commissionaires
- G4S
- International Intelligence Limited
- Intelligent (UK Holdings) Limited
- Mitie
- Rubicon International Services
Americas
Canada
- GardaWorld
- Canadian Corps of Commissionaires
United States
- ADT Security Services
- Allied Universal
- G4S Secure Solutions
- Inter-Con Security
- Monitronics
- Paragon Systems
- Pinkerton
- Vivint
- Blackwater
- American International Security Corp
See also
- List of private military companies
- List of non-governmental paramilitary organizations
- Computer security companies (category)