This is a list of insurance companies based in the United States. These are companies with a strong national or regional presence.
U.S. insurance companies
- 21st Century Insurance
- AccuQuote
- Alleghany Corporation
- Allied Insurance
- Allstate
- American Automobile Association
- American Family Insurance
- American Income Life Insurance Company
- American International Group (AIG)
- American National Insurance Company
- Amica Mutual Insurance
- Aon Corporation
- Assurant
- Auto-Owners Insurance
- AXA Equitable Life Insurance Company
- Bankers Life & Casualty Company
- Berkshire Hathaway
- California Casualty
- Capital Insurance Group
- CNA Financial
- Colonial Life & Accident Insurance Company
- Commerce Insurance Group
- Conseco
- Country Financial
- Chartis
- Chubb Corp.
- Encompass
- Erie Insurance Group
- Esurance
- Everest Re Group
- Evergreen USA RRG
- Farmers Insurance Group
- Federated Mutual Insurance
- GAINSCO
- GEICO
- General Re
- Genworth Financial
- GMAC Insurance
- Hanover Insurance
- The Hartford
- HCC Insurance Holdings
- Hereford Insurance Company
- Infinity Property & Casualty Corporation
- International Fidelity Insurance Company
- Jackson National Life
- John Hancock Insurance
- Kemper Insurance
- Knights of Columbus Insurance
- Liberty Mutual
- Markel Corporation
- Merchants Insurance Group
- Mercury Insurance Group
- MetLife
- Mutual of America
- Mutual of Omaha
- Nationwide Mutual Insurance Company
- New Jersey Manufacturers Insurance Company
- New York Life Insurance Company
- OneBeacon
- Pacific Life
- PEMCO
- Penn Mutual
- Principal Financial Group
- Progressive
- Protective Life
- Prudential Financial
- The Regence Group
- Reliance Insurance Company
- Response Insurance
- RLI Corp.
- Safe Auto Insurance Company
- Safeco
- Safeway Insurance Group
- Sentry Insurance
- Selective Insurance
- Shelter Insurance
- Southern Aid and Insurance Company
- Standard Insurance Company
- State Farm Insurance
- Swiss Re
- Symetra
- Tri-State Consumer Insurance Company
- TIAA-CREF
- The Travelers Companies
- Uniguard - Headquarter in greater Seattle area
- United Auto Insurance Company
- Unitrin Direct Auto Insurance
- Unum
- Vantislife Insurance Company
- USAA
- Wawanesa Insurance USA (CA and OR)
- Wells Fargo
- West Coast Life
- Western Mutual Insurance Group
- Westfield Insurance
- Western Reserve Life Insurance Company
- White Mountains Insurance Group
