| Treaty | Signature | Ratification | Party status |
|---|---|---|---|
| Agreement on Port State Measures | Accession | ||
Agreement relating to the Implementation of Part XI of the United Nations Convention on the Law of the Sea of 10 December 1982 |
Ratification | ||
Basel Convention |
Accession | ||
Cartagena Protocol |
Accession | ||
| Convention for the Conservation of Antarctic Marine Living Resources | Acceptance | ||
Convention on Biological Diversity |
Acceptance | ||
Convention on International Trade in Endangered Species of Wild Fauna and Flora |
Ratification | ||
| International Convention for the Conservation of Atlantic Tunas | Ratification | ||
International Treaty on Plant Genetic Resources for Food and Agriculture |
Accession | ||
| International Tropical Timber Agreement | Acceptance | ||
Kyoto Protocol |
Acceptance | ||
Minamata Convention on Mercury |
Acceptance | ||
Montreal Protocol |
Acceptance | ||
|
Nagoya Protocol |
Acceptance | ||
Nagoya – Kuala Lumpur Supplementary Protocol |
Acceptance | ||
Paris Agreement |
Acceptance | ||
Rotterdam Convention |
Acceptance | ||
Stockholm Convention |
Accession | ||
The Beijing Amendment (1999) |
Acceptance | ||
The Convention on Wetlands |
Ratification | ||
The Copenhagen Amendment (1992) |
Acceptance | ||
The Kigali Amendment (2016) |
Acceptance | ||
The London Amendment (1990) |
Acceptance | ||
The Montreal Amendment (1997) |
Acceptance | ||
| UN Fish Stocks Agreement | Ratification | ||
United Nations Convention on the Law of the Sea |
Ratification | ||
United Nations Convention to Combat Desertification |
Acceptance | ||
United Nations Framework Convention on Climate Change |
Acceptance | ||
Vienna Convention |
Accession |
Japan