| name | image | type | Context | date effective | Language | location | date signed | Country | continent | depositary |
|---|---|---|---|---|---|---|---|---|---|---|
| Treaty of Küçük Kaynarca |  | Mixed | fine della guerra russo turca 1768-1774 [Guerra_russo-turca_(1768-1774)] | Russian language | 21/07/1774 | Bulgaria | Europe | |||
| Treaty of Sofia | 31/03/1904 | Bulgaria | Europe |