| Name | Type | Sector | Country | Joined On |
|---|---|---|---|---|
| Instituto de Estudos Legislativos Brasileiro (IDELB) | NGO Local | Not Applicable | Brazil | 10-Jul-2004 |
| Instituto Ethos de Empresas e Responsibilidade Social | Business Association Global | Not Applicable | Brazil | 21-May-2003 |
| Instituto Internacional de Pesquisa Socioambiental Chico Mendes | NGO Local | Not Applicable | Brazil | 05-Oct-2008 |
| Instituto Paradigma | NGO Local | Not Applicable | Brazil | 20-Jun-2007 |
| ISAE - Instituto Superior de Administracao e Economia da Fundacao Getulio Vargas | Academic | Not Applicable | Brazil | 01-Aug-2004 |
| Itaipu Binacional - Brazil | Company | Electricity | Brazil | 12-Feb-2009 |
| Keyassociados | Small or Medium-sized Enterprise | Industrial Support Services | Brazil | 18-Jun-2008 |
| Klabin S.A. | Company | Industrial materials | Brazil | 27-Jun-2003 |
| Grupo Sabin | Company | Medical equipment and services; Health care providers | Brazil | 10-Dec-2007 |
| Light S.A. | Company | Electricity | Brazil | 12-Sep-2007 |