| 会社名 |
| 三井住友海上グループホールディングス株式会社 |
Mitsui Sumitomo Insurance（China）Company Limited |
| 三井住友海上火災保険株式会社 |
Mitsui Sumitomo Insurance(London Management) Ltd. |
| 三井住友海上きらめき生命保険株式会社 |
Mitsui Sumitomo Insurance(London) Ltd. |
| 三井住友海上メットライフ生命保険株式会社※ |
Mitsui Sumitomo Marine Management (U.S.A.), Inc. |
| 三井ダイレクト損害保険株式会社※ |
Mitsui Sumitomo Seguros S.A. |
| ＭＳＫマリンサービス株式会社 |
MSI Adjusting (Thailand) Co., Ltd. |
| 三井住友海上損害調査株式会社 |
MSI Corporate Capital Limited |
| 三井住友海上ケアネット株式会社 |
MSI European Services Ltd |
| ＭＳＫ商事株式会社 |
MSI Holding (Thailand) Company Limited |
| 三井住友海上ローンサービス株式会社 |
MSI Property (U.S.A.) Inc. |
| 株式会社インターリスク総研 |
MSI Risk Consultancy Services (Malaysia) Sdn Bhd |
| ASSUMO Service und Management Organisation GmbH |
MSI Risk Management Services, Inc. |
| BPI/MS Insurance Corporation |
MSIG Corporate Service（Europe）Limited |
| Calm Sea Service Company Limited |
MSIG Holdings (Americas), Inc. |
| Cholamandalam MS General Insurance Company Limited |
MSIG Holdings (Asia) Pte.Ltd. |
| Cholamandalam MS Risk Services Limited |
MSIG Holdings (Europe) Limited |
| M&H Insurance Agency Limited |
Oriental Management Services Limited |
| MSIG Insurance (Malaysia) Bhd. |
PT. Asuransi MSIG Indonesia |
| Mitsui Sumitomo Insurance (Singapore) Pte Ltd. |
Seven Hills Insurance Agency, Inc. |
| Mitsui Sumitomo Insurance Company (Europe), Limited |
Seven Hills Insurance Agency, LLC |
| Mitsui Sumitomo Insurance Company (Hong Kong),Limited |
Seven Seas Insurance Agency, Inc. |
| Mitsui Sumitomo Insurance Company of America |
SPAC Insurance (Bermuda) Limited |
| Mitsui Sumitomo Insurance Underwriting at Lloyd’s Limited |
Taisho Realty America Corporation |
| Mitsui Sumitomo Insurance USA Inc. |
United Insurance Company of Vietnam |
