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PARENT | | SUBSIDIARIES | | JURISDICTION OF ORGANIZATION |
| Alterra Capital Holdings Limited (the Registrant) | | Alterra Bermuda Limited | | Bermuda |
| | Alterra Capital America Limited | | United Kingdom |
| | Alterra Capital Services Limited | | Ireland |
| | Alterra Capital UK Limited | | United Kingdom |
| | Alterra Holdings Limited | | Bermuda |
| | Alterra Managers Limited Alterra Capital Brazil Limited | | Bermuda United Kingdom |
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| Alterra Bermuda Limited | | Alterra Capital Europe Limited | | Ireland |
| | Alterra Diversified Strategies Limited | | Bermuda |
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| Alterra Capital Europe Limited | | Alterra Europe plc | | Ireland |
| | Alterra Reinsurance Europe plc | | Ireland |
| | Alterra Servicios S.A. | | Argentina |
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| Alterra Capital America Limited | | Alterra USA Holdings Limited | | Delaware, USA |
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| Alterra USA Holdings Limited | | Alterra Finance LLC | | Delaware, USA |
| | Alterra Insurance USA Inc. | | Delaware, USA |
| | Alterra Reinsurance Services Inc. | | Delaware, USA |
| | Alterra Reinsurance USA Inc. | | Connecticut, USA |
| | Alterra Specialty Insurance Services Limited | | Delaware, USA |
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| Alterra Reinsurance USA Inc. | | Alterra America Insurance Company | | Delaware, USA |
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| Alterra America Insurance Company | | Alterra Excess & Surplus Insurance Company | | Delaware, USA |
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| Alterra Specialty Insurance Services Limited | | Alterra California Insurance Services Limited | | California, USA |
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| Alterra Capital Services Limited | | Alterra Capital Services BDA Limited | | Bermuda |
| | Alterra Capital Services UK Limited | | United Kingdom |
| | Alterra Capital Services USA LLC | | Delaware, USA |
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| Alterra Capital UK Limited | | Alterra at Lloyd’s Limited | | United Kingdom |
| | Alterra Corporate Capital 2 Limited | | United Kingdom |
| | Alterra Corporate Capital 3 Limited | | United Kingdom |
| | Alterra Corporate Capital 4 Limited | | United Kingdom |
| | Alterra Corporate Capital 5 Limited | | United Kingdom |
| | Alterra Corporate Capital 6 Limited | | United Kingdom |
| | Alterra Danish Re (UK) Group Limited | | United Kingdom |
| | Alterra Denmark ApS | | Denmark |
| | Alterra UK Underwriting Services Limited | | United Kingdom |
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| Alterra at Lloyd’s Limited | | Alterra Brasil Serviços Técnicos Limitada | | Brazil |
| | Alterra Singapore Insurance Managers Pte. Limited | | Singapore |
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| Alterra Capital Brazil Limited | | Alterra Participações Limitada | | Brazil |
| | Alterra Re Participações do Brasil Limitada | | Brazil |
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| Alterra Holdings Limited | | Alterra Agency Limited | | Bermuda |
| | New Point III Limited | | Bermuda |
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| New Point III Limited | | New Point Re III Limited | | Bermuda |
