| NORTHSTAR DESIGN & CONSTRUCTION, LLCDade City, FL · Active | Dade City, FL | LLC | Apr 9, 2018 | Active |
| HAMBRO INVESTMENTS, LLCMarianna, FL · Active | Marianna, FL | LLC | Dec 9, 2019 | Active |
| JOHN M. HAMILTON, CPA, P.A.Marianna, FL · Active | Marianna, FL | Corporation | May 3, 2018 | Active |
| COWBRO INVESTMENTS, L.L.C.Marianna, FL · Active | Marianna, FL | LLC | Sep 9, 2011 | Active |
| BEACH DRIVE RETAIL, INC.St. Petersburg, FL · Active | St. Petersburg, FL | Corporation | Feb 10, 2006 | Active |
| HAMILTON GP, INC.St. Petersburg, FL · Active | St. Petersburg, FL | Corporation | Sep 20, 2001 | Active |
| GREATER LAKELAND DEVELOPMENT CORPORATION.Location not reported, FL · Inactive | Location not reported, FL | Corporation | Feb 12, 1964 | Inactive |
| JOHN M. HAMILTON, M.D., P.A.St. Petersburg, FL · Inactive | St. Petersburg, FL | Corporation | Dec 23, 1968 | Inactive |
| JOHN HAMILTON, & SONS, INC.Micco, FL · Active | Micco, FL | Corporation | Jul 8, 1980 | Active |
| LAKELAND INDUSTRIAL BOARD, INC.Location not reported, FL · Inactive | Location not reported, FL | Nonprofit | Nov 13, 1962 | Inactive |
| LAKELAND AREA JOBS, INC.Location not reported, FL · Inactive | Location not reported, FL | Nonprofit | Dec 14, 1970 | Inactive |
| HAMILTON PARTNERSHIP, LTD.St. Petersburg, FL · Inactive | St. Petersburg, FL | Partnership | Oct 5, 2001 | Inactive |
| JKG, LLCMarianna, FL · Inactive | Marianna, FL | LLC | Aug 24, 2005 | Inactive |
| LAW OFFICES OF JOHN M. HAMILTON III P.L.L.C.Saint Petersburg, FL · Inactive | Saint Petersburg, FL | LLC | Jan 19, 2010 | Inactive |
| MILK & HONEY OF MARIANNA, LLCMarianna, FL · Inactive | Marianna, FL | LLC | Aug 18, 2011 | Inactive |
| NORTHSTAR DESIGN & CONSTRUCTION, INC.Tampa, FL · Inactive | Tampa, FL | Corporation | Jan 3, 2000 | Inactive |
| NORTHSTAR - NORTH AMERICA, INC.Clearwater, FL · Inactive | Clearwater, FL | Corporation | Jan 3, 2000 | Inactive |
| BAY PINES PLAZA, INC.St. Petersburg, FL · Inactive | St. Petersburg, FL | Corporation | Dec 14, 1992 | Inactive |
| HAMILTON LAWN CARE, INC.Jacksonville, FL · Active | Jacksonville, FL | Corporation | Apr 2, 1993 | Active |
| REAL ESTATE TRENDLINE, INC.St. Petersburg, FL · Inactive | St. Petersburg, FL | Corporation | Aug 31, 1993 | Inactive |
| KHC CONSULTING, INC.Marianna, FL · Inactive | Marianna, FL | Corporation | Jan 21, 1994 | Inactive |
| THE NORTHSTAR ASSOCIATES, INC.Clearwater, FL · Inactive | Clearwater, FL | Corporation | Jun 13, 1997 | Inactive |
| LNH INVESTMENT HOLDINGS, INC.Marianna, FL · Active | Marianna, FL | Corporation | Jun 16, 1999 | Active |
| DIRECT INFORMATION SYSTEMS, INC.Orlando, FL · Inactive | Orlando, FL | Corporation | Dec 30, 1991 | Inactive |