| Treaty | Signature | Ratification | Party status |
|---|---|---|---|
| Agreement on Port State Measures | Ratification | ||
Bamako Convention |
Ratification | ||
Basel Convention |
Accession | ||
Cartagena Protocol |
Accession | ||
Convention on Biological Diversity |
Accession | ||
Convention on International Trade in Endangered Species of Wild Fauna and Flora |
Ratification | ||
| International Commission for the Conservation of Atlantic Tunas | Accession | ||
International Treaty on Plant Genetic Resources for Food and Agriculture |
Accession | ||
Kyoto Protocol |
Accession | ||
Minamata Convention on Mercury |
Ratification | ||
Montreal Protocol |
Accession | ||
|
Nagoya Protocol |
Accession | ||
Paris Agreement |
Ratification | ||
Ramsar Convention |
Ratification | ||
Rotterdam Convention |
Accession | ||
Stockholm Convention |
Accession | ||
The Beijing Amendment (1999) |
Accession | ||
The Copenhagen Amendment (1992) |
Accession | ||
The Kigali Amendment (2016) |
Ratification | ||
The London Amendment (1990) |
Accession | ||
The Montreal Amendment (1997) |
Accession | ||
United Nations Convention on the Law of the Sea |
Ratification | ||
United Nations Convention to Combat Desertification |
Ratification | ||
United Nations Framework Convention on Climate Change |
Ratification | ||
Vienna Convention |
Accession |
Sierra Leone