Signatories
| On behalf of | Signed by | Ratified | Date of ratification |
|---|---|---|---|
| Argentina | Cristina Kirchner | Yes | 2 August 2010 |
| Bolivia | Evo Morales | Yes | 11 March 2009 |
| Brazil | Luiz Inácio Lula da Silva | Yes | 14 July 2011 |
| Chile | Michelle Bachelet | Yes | 22 November 2010 |
| Colombia | Álvaro Uribe | Yes | 28 January 2011 |
| Ecuador | Rafael Correa | Yes | 15 July 2009 |
| Guyana | Bharrat Jagdeo | Yes | 12 February 2010 |
| Paraguay | Nicanor Duarte | Yes | 9 June 2011 |
| Peru | Alan García | Yes | 11 May 2010 |
| Suriname | Ronald Venetiaan | Yes | 5 November 2010 |
| Uruguay | Rodolfo Nin Novoa | Yes | 9 February 2011 |
| Venezuela | Hugo Chávez | Yes | 13 March 2010 |
Read more about this topic: UNASUR Constitutive Treaty