List of United States insurance companies

• PhilHealth
• 21st Century Insurance
• Acuity
• ACE Limited
• Aetna
• Aflac
• Alleghany Corporation
• Allied Insurance
• Allstate
• American Automobile Association
• American Family Insurance
• American Income Life Insurance Company
• American International Group (AIG)
• American National Insurance Company
• Ameritas Life Insurance Company
• Amica Mutual Insurance
• Applied Underwriters
• Arbella Insurance Group
• Assurant
• Assurity Life Insurance Company
• Auto-Owners Insurance
• AXA Equitable Life Insurance Company
• Bankers Life and Casualty Company
• Baja Auto Insurance
• Berkshire Hathaway
• California Casualty
• Central United Life Insurance Company
• Cincinnati Insurance Company
• CNA Financial
• Colonial Life & Accident Insurance Company
• Combined Insurance
• Commerce Insurance Group
• Conseco
• Country Financial
• Chartis
• Chubb Corp.
• Electric Insurance Company
• Elephant.com
• Encompass Insurance Company
• Erie Insurance Group
• Esurance
• Evergreen USA RRG
• FM Global
• Family Heritage
• Family Life Insurance Company
• Farmer Brown Insurance Agency
• Farmers Insurance Group
• Federated Mutual Insurance Company
• First Catholic Slovak Ladies Association of the United States of America
• FirstComp Insurance Company
• First Insurance Company of Hawaii
• GAINSCO
• GEICO
• General Re
• Genworth Financial
• Germania Farm Mutual Insurance Association
• GMAC Insurance
• Gracy Title Company
• Grange Mutual Casualty Company
• Guarantee Insurance Company
• Guardian Life Insurance Company of America
• Hanover Insurance
• The Hartford
• HCC Insurance Holdings
• Hiscox
• Homesite Insurance
• Horace Mann Insurance Company
• Infinity Property & Casualty Corporation
• Insurance Panda
• IntelliQuote Insurance Services
• Jackson National Life
• John Hancock Insurance
• K&K Insurance
• Kansas City Life Insurance Company
• Kentucky Farm Bureau
• Knights of Columbus
• Liberty Mutual
• Lincoln National Corporation
• Manhattan Life Insurance Company
• Markel Corporation
• MassMutual Financial Group
• Merchants Insurance Group
• Mercury Insurance Group
• MetLife
• Modern Woodmen of America
• Mutual of Omaha
• National Life
• Nationwide Mutual Insurance Company
• New Jersey Manufacturers Insurance Company
• New York Life Insurance Company
• Nonprofits Insurance Alliance Group
• Northwestern Mutual
• Ocean Harbor Casualty Insurance Company
• Ohio Mutual Insurance Group
• Omega
• OneBeacon
• Oscar
• Oxford Health Plans
• Pacific Life
• Pacificare
• PEMCO
• Penn Mutual
• Philadelphia Contributionship for the Insurance of Houses from Loss by Fire
• Philadelphia Insurance Companies
• Physicians Mutual
• Principal Financial Group
• Primerica
• Progressive
• Protective Life
• Prudential Financial
• QBE
• The Regence Group
• Reliance Insurance Company
• RLI Corp.
• Safe Auto Insurance Company
• Safeco
• Safeway Insurance Group
• Secura Insurance Company
• Sentry Insurance
• Selective Insurance
• Shelter Insurance
• Southern Aid and Insurance Company
• Standard Insurance Company
• State Auto Insurance Group
• State Farm Insurance
• Sun Life Financial
• Symetra
• TIAA-CREF
• The Main Street America Group
• The Norfolk & Dedham Group
• The Travelers Companies
• Trupanion
• Unum
• USAA
• West Bend^{[disambiguation needed]}
• West Coast Life
• Western Mutual Insurance Group
• Western & Southern Financial Group
• Western United Life Assurance Company
• Westfield Insurance
• White Mountains Insurance Group
• Workmen's Auto Insurance Company
• Zurich NA

 Life annuity

• Allstate
• American Family Insurance
• American Fidelity Assurance
• Amica Mutual Insurance
• AXA Equitable Life Insurance Company
• Bankers Life and Casualty
• Conseco
• Farmers Insurance Group
• Fidelity Life
• Genworth Financial
• ING Group
• Jackson National Life
• John Hancock Insurance
• Lincoln National Corporation
• MetLife
• Mutual of Omaha
• Nationwide Mutual Insurance Company
• Old Mutual
• Pacific Life
• Protective Life
• Prudential Financial
• Standard Insurance Company
• State Farm Insurance
• Thrivent Financial for Lutherans
• TIAA-CREF
• Transamerica Corporation
• UNIFI Companies
• United of Omaha
• Western & Southern Financial Group
• Woman's Life Insurance Society

• Health insurance (major medical insurance)

  
  
• AARP
• Aetna
• American Family Insurance
• American National Insurance
• Amerigroup
• Anthem Blue Cross and Blue Shield
• Assurant
• Blue Cross and Blue Shield Association
• Cambia Health Solutions
• Centene Corporation
• Cigna
• Coventry Health Care
• EmblemHealth
• Fortis
• Golden Rule Insurance Company
• Group Health Cooperative
• GHI
• Health Net
• HealthMarkets
• HealthPartners
• HealthSpring
• Highmark
• Humana
• Independence Blue Cross
• Kaiser Permanente
• Kaleida Health
• LifeWise Health Plan of Oregon
• Medica
• Medical Mutual of Ohio
• Molina Healthcare
• Premera Blue Cross
• Principal Financial Group
• Shelter Insurance
• State Farm
• Thrivent Financial for Lutherans
• UnitedHealth Group
• Unitrin
• Universal American Corporation
• WellCare Health Plans
• WellPoint

Medicare

• Aetna
• American Family Insurance
• Bankers Life and Casualty
• Conseco
• Kaiser Permanente
• Mutual of Omaha
• Premera Blue Cross
• Thrivent Financial for Lutherans
• Tricare
• YKP HEALTH INSURANCE CO.

Supplemental insurance

• Aflac
• Allstate
• American Fidelity Assurance
• Assurant
• Central United Life Insurance Company
• Colonial Life & Accident Insurance Company
• Combined Insurance
• Conseco
• Liberty National Life Insurance Company
• Manhattan Life Insurance Company
• MEGA Life and Health Insurance
• Mutual of Omaha
• State Farm Insurance
• Washington National

Travel insurance

• Allianz Global Assistance
• April Travel Protection
• InsureandGo|InsureandGo USA
• Seven Corners
• Jefferson Insurance Company
• USA-ASSIST Worldwide Protection

Workers' compensation

• Accident Fund
• American International Group (AIG)
• Cincinnati Financial Corporation
• Erie Insurance Group
• GUARD Insurance Group
• Hanover Insurance
• The Hartford
• Liberty Mutual
• Merchants Insurance Group
• Missouri Employers Mutual
• Nationwide Mutual Insurance Company
• Penn National Insurance
• Sentry Insurance
• State Accident Insurance Fund
• State Compensation Insurance Fund
• State Farm Insurance
• WellPoint
• Zenith Insurance Company

source : wikipedia