【持株会社】

MS&ADインシュアランス グループホールディングス株式会社

【国内保険会社】

三井住友海上火災保険株式会社
あいおいニッセイ同和損害保険株式会社
三井ダイレクト損害保険株式会社
三井住友海上あいおい生命保険株式会社
三井住友海上プライマリー生命保険株式会社
 

【関連事業会社】

MS&ADインターリスク総研株式会社
MS&ADローンサービス株式会社
あいおいニッセイ同和損害調査株式会社
あいおいニッセイ同和インシュアランスサービス株式会社
株式会社あいおいニッセイ同和自動車研究所
リトルファミリー少額短期保険株式会社
MS&ADビジネスサポート株式会社
MSK安心ステーション株式会社
三井住友海上キャピタル株式会社
MS&ADスタッフサービス株式会社
MS&ADアビリティワークス株式会社
MS&ADグランアシスタンス株式会社
MSプラスワン少額短期保険株式会社

【海外保険会社・再保険会社等】

MSIG (Asia) Pte. Ltd.
MSIG Insurance (Singapore) Pte. Ltd.
PT. Asuransi MSIG Indonesia
Asia Insurance (Cambodia) Plc.
Mitsui Sumitomo Insurance (China) Company Limited
MSIG Insurance (Hong Kong) Limited
MSIG Insurance (Malaysia) Bhd.
MSIG Insurance (Thailand) Public Company Limited
MSI Holding (Thailand) Company Limited
Calm Sea Service Company Limited
MSIG Service and Adjusting (Thailand) Company Limited
MSIG Berhad
Ueang Mai Co., Ltd.
Yardhimar Company Limited
MBTS Broking Services Company Limited
BPI/MS Insurance Corporation
MSIG Insurance (Vietnam) Company Limited
Cholamandalam MS General Insurance Company Limited
Cholamandalam MS Risk Services Limited
MSIG Mingtai Insurance Co., Ltd.
MSIG Insurance (Lao) Co., Ltd.
National Insurance Company Berhad
MSIG Holdings (U.S.A.), Inc.
Mitsui Sumitomo Marine Management (U.S.A.), Inc.
Mitsui Sumitomo Insurance USA Inc.
Mitsui Sumitomo Insurance Company of America
MSIG Specialty Insurance USA Inc.
Seven Hills Insurance Agency, LLC
Mitsui Sumitomo Seguros S/A.
Mitsui Sumitomo Insurance Company Limited-Escritório de Representação no Brasil Ltda.
Lifson Re Ltd
SPAC Insurance (Bermuda) Limited
Aioi Nissay Dowa Insurance Company of Europe SE
Toyota Insurance Management SE
Aioi Nissay Dowa Insurance Management Limited
Aioi Nissay Dowa Life Insurance of Europe AG
DTRIC Insurance Company, Limited
DTRIC Insurance Underwriters, Limited
DTRIC Management Company, Limited
Aioi Bangkok Insurance Public Company Limited
Bangkok Chayoratn Company, Limited
Bangkok Chayolife Company, Limited
Aioi Nissay Dowa Management New Zealand Limited
Aioi Nissay Dowa Insurance Company Australia Pty Ltd
Aioi Nissay Dowa Insurance (China) Company Limited
Guang Ai Insurance Brokers Ltd.
LLC Toyota Insurance Management (Insurance Brokers)
LLC Toyota Insurance Management (Insurance Agency)
Toyota Insurance Management (Insurance Broker) LLP
Box Innovation Group Limited
Insure The Box Limited
ITB Services Limited
ITB Web Limited
ITB Telematics Solutions LLP
ITB Premium Finance Limited
MS Financial Reinsurance Limited
Interisk Asia Pte Ltd
InterRisk Consulting (Shanghai) Co.,Ltd
InterRisk Asia (Thailand) Company Limited
MSI GuaranteedWeather, LLC
MSI GuaranteedWeather Trading Limited
Vortex Insurance Agency, LLC
PT. MSIG Life Indonesia Tbk.
Hong Leong Assurance Berhad
Hong Leong MSIG Takaful Berhad
Max Life Insurance Co. Ltd.
Bangkok Life Assurance PCL
Ceylinco Insurance PLC
MS Amlin Corporate Services Limited
Leadenhall Capital Partners LLP
Leadenhall Capital Partners US LLC
Leadenhall Capital Partners US LP
Leadenhall Capital Bermuda Limited
MS Amlin Underwriting Limited
MS Amlin Corporate Member Limited
Amlin UK Limited
MS Amlin Reinsurance Managers, Inc.
MS Amlin (India) Private Limited
MSI Corporate Capital Limited
Old Amlipden Company 12 Limited
MS Amlin Underwriting Services Limited
MS Amlin Holdings Limited
MS Amlin Investments Limited
Amlin France Legacy Services
MS Amlin Asia Pacific Pte. Ltd.
MS Amlin Labuan Limited
MS Amlin Investment Holdings Limited
MS Amlin Investment Management Limited
MS Amlin (MENA) Limited
Amlin Netherlands Holding B.V.
MS Amlin Marine N.V.
MS Amlin AG
MS Amlin Insurance SE
SHUS Holdings Ltd
MS Amlin Distribution Holdings INC.
International Transportation & Marine Office, LLC
International Transportation & Marine Agency, LLC
Associated MG, LLC
Mitsui Sumitomo Insurance Company (Europe), Limited
MSIG Corporate Services (Europe) Limited
MSIG German Services GmbH
MSIG Insurance Europe AG
Aioi Nissay Dowa Insurance Services USA Corporation
Advanced Connectivity, LLC
Connected Analytic Services, LLC
Toyota Insurance Management Solutions USA, LLC
MOTER Technologies, Inc.
MS First Capital Insurance Limited
Aioi Nissay Dowa Services Asia Pte. Ltd
Aioi Nissay Dowa Europe Limited
Aioi Nissay Dowa Insurance UK Limited
Toyota Insurance Management South Africa Proprietary Limited
KBZ MS General Insurance Company Limited
MSIG Management (Shanghai) Co., Limited
MSR Capital Partners, LLC
Max Financial Services Limited
MS Distribution Holdings Inc.
MSIS PTE. LTD.
MSIG Sokxay Insurance Co., Ltd.
Bangkok Insurance (Cambodia) Plc.
FLT Prime Insurance Corporation
MS Amlin Marine Services Pte. Ltd.
MSIG Insurance Services, Inc.
MS Transverse Insurance Group, LLC
MS Transverse Specialty Insurance Company
MS Transverse Insurance Company
TRM Specialty Insurance Company
Transverse Insurance Services, LLC
Transverse Asset Management, LLC
Transverse Asset Services, LLC
Transverse Ventures GP, LLC
Transverse Ventures Fund, LP
Launch Underwriters, LLC
Launch Environmental Underwriters, LLC
FLT Prime Insurance Corporation
Autosan Kazakhstan LLP
Aioi R&D Lab Limited
Toyota Insurance Management UK Limited