| Document Name: | Cusco Declaration |
| Date Created: | 8 December 2004 |
| Location Of Document: | Cusco, Peru |
| Signers: | 12 South American countries |
The Cusco Declaration, formally titled Preamble to the Foundation Act of the South American Union, is a two-page declaration of intent signed by 12 South American countries during the Third South American Summit on 8 December 2004 in Cusco, Peru. It announces the foundation of the Union of South American Nations. It called for a regional parliament, a common market and a common currency.