| Contracting Party | Treaty | Signature | Instrument | In Force | Details |
| Saint Lucia | Berne Convention | | Accession: May 21, 1993 | August 24, 1993 | Details |
| Saint Lucia | Nice Agreement | | Accession: December 18, 2000 | March 18, 2001 | Details |
| Saint Lucia | Paris Convention | | Accession: March 9, 1995 | June 9, 1995 | Details |
| Saint Lucia | Patent Cooperation Treaty | | Accession: May 30, 1996 | August 30, 1996 | Details |
| Saint Lucia | Phonograms Convention | | Accession: January 2, 2001 | April 2, 2001 | |
| Saint Lucia | Rome Convention | | Accession: May 17, 1996 | August 17, 1996 | Details |
| Saint Lucia | Vienna Agreement | | Accession: September 25, 2001 | December 25, 2001 | |
| Saint Lucia | Washington Treaty | | Accession: December 18, 2000 | | |
| Saint Lucia | WIPO Convention | | Accession: May 21, 1993 | August 21, 1993 | |
| Saint Lucia | WIPO Copyright Treaty | | Accession: November 24, 1999 | March 6, 2002 | |
| Saint Lucia | WIPO Performances and Phonograms Treaty | | Accession: November 24, 1999 | May 20, 2002 | |