| PTSI MANAGED SERVICES INC.Location not reported, FL · Active | Location not reported, FL | Corporation | Jun 21, 2013 | Active |
| PARSONS CONSTRUCTION GROUP INC.Location not reported, FL · Active | Location not reported, FL | Corporation | Feb 28, 2013 | Active |
| PARSONS SECURE SOLUTIONS INC.Location not reported, FL · Inactive | Location not reported, FL | Corporation | Oct 15, 2010 | Inactive |
| PARSONS WATER & INFRASTRUCTURE INC.Location not reported, FL · Active | Location not reported, FL | Corporation | May 16, 2003 | Active |
| PARSONS TECHNICAL SERVICES INC.Location not reported, FL · Active | Location not reported, FL | Corporation | Apr 3, 2003 | Active |
| CROMULENCE LLCMelbourne, FL · Active | Melbourne, FL | LLC | Jan 17, 2014 | Active |
| WILLIAMS ELECTRIC CO., INC.Fort Walton Beach, FL · Active | Fort Walton Beach, FL | Corporation | May 20, 1968 | Active |
| PARSONS GOVERNMENT SERVICES INC.Location not reported, FL · Active | Location not reported, FL | Corporation | Jan 22, 1959 | Active |
| PARSONS ENGINEERING SCIENCE, INC.Location not reported, FL · Inactive | Location not reported, FL | Corporation | Sep 1, 1976 | Inactive |
| PARSONS CONSTRUCTORS INC.Location not reported, FL · Active | Location not reported, FL | Corporation | Apr 3, 1979 | Active |
| PARSONS ENVIRONMENT & INFRASTRUCTURE GROUP INC.Location not reported, FL · Active | Location not reported, FL | Corporation | Mar 16, 2001 | Active |
| DELCAN CORPORATIONLocation not reported, FL · Inactive | Location not reported, FL | Corporation | Feb 19, 2003 | Inactive |
| PARSONS RCI INC.Location not reported, FL · Inactive | Location not reported, FL | Corporation | Sep 6, 2006 | Inactive |
| DELCATHER LIMITED INC.Location not reported, FL · Inactive | Location not reported, FL | Corporation | Feb 11, 2013 | Inactive |
| PARSONS SERVICES COMPANYLocation not reported, FL · Active | Location not reported, FL | Corporation | Feb 26, 2013 | Active |
| POLARIS ALPHA ADVANCED SYSTEMS, INC.Location not reported, FL · Active | Location not reported, FL | Corporation | May 4, 2018 | Active |
| PTG CONSTRUCTION SERVICES COMPANYLocation not reported, FL · Inactive | Location not reported, FL | Corporation | Sep 10, 1998 | Inactive |
| FINLEY MCNARY ENGINEERS, INC.Tallahassee, FL · Inactive | Tallahassee, FL | Corporation | Aug 2, 1989 | Inactive |
| EXI PARSONS TELECOM LLCLocation not reported, FL · Inactive | Location not reported, FL | LLC | Jul 11, 2001 | Inactive |
| BRAXTON TECHNOLOGIES, LLCLocation not reported, FL · Active | Location not reported, FL | LLC | May 15, 2008 | Active |
| OGSYSTEMS, LLCLocation not reported, FL · Active | Location not reported, FL | LLC | Feb 14, 2012 | Active |
| INGENICOMM, LLCLocation not reported, FL · Active | Location not reported, FL | LLC | Nov 25, 2019 | Active |
| BRAXTON SCIENCE & TECHNOLOGY GROUP, LLCLocation not reported, FL · Active | Location not reported, FL | LLC | Jun 23, 2020 | Active |
| SOUTH FLORIDA BANDITS FOOTBALL CLUB, INC.Royal Palm Beach, FL · Inactive | Royal Palm Beach, FL | Nonprofit | Jan 18, 1994 | Inactive |
| PARSONS ARCHITECTURE OF FLORIDA INC.Location not reported, FL · Active | Location not reported, FL | Corporation | Aug 14, 2007 | Active |