| name | image | type | Context | date effective | Language | location | date signed | Country | continent | depositary |
|---|---|---|---|---|---|---|---|---|---|---|
| Council of Europe Convention on the Protection of Children Against Sexual Exploitation and Sexual Abuse | 01/07/2010 | Lanzarote | 25/10/2007 | Spain | Europe | Council of Europe | ||||
| Outline Convention on Transfrontier Co-operation | 22/12/1981 | English language | 21/05/1980 | Spain | Europe | Council of Europe | ||||
| Tratado de Granada | Spanish language | Spain | Europe | |||||||
| Tratado de Lisboa | 23/05/1840 | Portuguese language | 31/08/1835 | Spain | Europe | |||||
| Treaty of Alcáçovas |  | Unspecified | Scoperta dell''America [Scoperta_dell%27America] | Spanish language | Spain | Europe |