| Contracting Party | Treaty | Signature | Instrument | In Force | Details |
| Singapore | Berne Convention | | Accession: September 21, 1998 | December 21, 1998 | Details |
| Singapore | Brussels Convention | | Accession: January 27, 2005 | April 27, 2005 | |
| Singapore | Budapest Treaty | | Accession: November 23, 1994 | February 23, 1995 | |
| Singapore | Hague Agreement | | Accession: January 17, 2005 | April 17, 2005 | Details |
| Singapore | Madrid Protocol | | Accession: July 31, 2000 | October 31, 2000 | Details |
| Singapore | Nice Agreement | | Accession: December 18, 1998 | March 18, 1999 | Details |
| Singapore | Paris Convention | | Accession: November 23, 1994 | February 23, 1995 | Details |
| Singapore | Patent Cooperation Treaty | | Accession: November 23, 1994 | February 23, 1995 | |
| Singapore | Singapore Treaty | May 18, 2006 | Ratification: March 26, 2007 | March 16, 2009 | |
| Singapore | UPOV Convention | | Accession: June 30, 2004 | July 30, 2004 | Details |
| Singapore | WIPO Convention | | Accession: September 10, 1990 | December 10, 1990 | |
| Singapore | WIPO Copyright Treaty | | Accession: January 17, 2005 | April 17, 2005 | |
| Singapore | WIPO Performances and Phonograms Treaty | | Accession: January 17, 2005 | April 17, 2005 | Details |