东京海上控股株式会社（Tokio Marine Holdings, Inc.，TYO：8766）东京海上创建于1879年，是日本规模最大、历史最悠久的财产保险企业，其总资产与保费收入在世界排名中一直名列前茅，被公认为日本财险的标志，在保险界中处于举足轻重的地位。注册资本为1500亿日元。

Tokio Marine Holdings is responsible for establishing and overseeing strategies for the entire group, managing the group's capital, and preparing consolidated financial statements. In addition, the holding company oversees subsidiaries to ensure that their compliance, internal auditing, risk management, CSR and other activities are consistent with the group's basic policies. As the publicly owned company representing the Tokio Marine Group, the holding company also handles investor relations and public relations for the group. The holding company takes the lead in maximizing corporate value. One way is by establishing medium- and long-term strategies. The company also allocates resources to business fields with the best prospects for profitability and growth. Collectively, these activities drive constant reforms of the group's business portfolio and help capture synergies from the various businesses of subsidiaries.

• Tokio Marine & Nichido Fire Insurance Co.
• Nisshin Fire & Marine Co.
• Tokio Marine & Nichido Life Insurance Co.
• Tokio Marine & Nichido Financial Life Insurance Co.
• Tokio Marine Asia Pte.
• Tokio Marine & Nichido Career Service Co.
• Millea Real-Estate-Risk Management
• Tokio Marine & Nichido Facilities
• Millea Mondial
• Tokio Marine Nichido Samuel