Johore - Actions
| Agreement | Action type | Action on | Effective on |
|---|---|---|---|
| The International Opium Convention and Subsequent Relative Papers | Accession | 17 December 1912 | |
| Accession of States of Johore, Kedah, Perlis, Kelantan and Trengganu to Extradition Treaty between the United Kingdom and Siam of March 4, 1911 | Accession | 28 October 1916 | |
| Convention and Protocol revising Universal Postal Convention of November 30, 1920 | Extension | 1 July 1928 | |
| Postal Union Agreement regarding Insured Letters and Boxes | Extension | 20 July 1931 |