| Contracting Party | Treaty | Signature | Instrument | In Force | Details |
| El Salvador | Beijing Treaty on Audiovisual Performances | November 7, 2012 | | | |
| El Salvador | Berne Convention | | Accession: November 18, 1993 | February 19, 1994 | Details |
| El Salvador | Brussels Convention | | Accession: April 22, 2008 | July 22, 2008 | Details |
| El Salvador | Budapest Treaty | | Accession: May 17, 2006 | August 17, 2006 | |
| El Salvador | Nairobi Treaty | | Accession: September 14, 1984 | October 14, 1984 | |
| El Salvador | Paris Convention | | Accession: November 18, 1993 | February 19, 1994 | Details |
| El Salvador | Patent Cooperation Treaty | | Accession: May 17, 2006 | August 17, 2006 | |
| El Salvador | Phonograms Convention | | Accession: October 25, 1978 | February 9, 1979 | |
| El Salvador | Rome Convention | | Accession: March 29, 1979 | June 29, 1979 | |
| El Salvador | Trademark Law Treaty | | Accession: August 14, 2008 | November 14, 2008 | |
| El Salvador | WIPO Convention | | Accession: June 18, 1979 | September 18, 1979 | |
| El Salvador | WIPO Copyright Treaty | | Accession: October 20, 1998 | March 6, 2002 | |
| El Salvador | WIPO Performances and Phonograms Treaty | | Accession: October 20, 1998 | May 20, 2002 | |