Griffin & Griffin Financial Services
- AIC
- Berkley
- Berkshire Hathaway GUARD
- Chubb
- Donegal
- EMC
- Encompass
- Foremost
- Frederick Mut.
- Harford Mutual
- Harleysville
- Hartford
- Infinity
- Lackawanna
- Liberty Mutual
- Lititz Mutual
- Main Street America
- MetLife
- Ohio Casualty
- PA Fair Plan
- Penn National
- Philadelphia
- Progressive
- Rockwood
- Safeco
- The Philadelphia Contributionship
- Tico
- Travelers
- Westfield Insurance
- William J. Griffin, Jr., CIC
- William J. Griffin, III, CISR