RíoVoluntário, headquartered in Rio de Janeiro, supports several hundred volunteer organizations involved in social work, the environment and health care.

Rio-based Iko Poran links the diverse talents of volunteers with needy organizations. Iko Poran also provides housing for volunteers.

Elsewhere in Rio state, Regua accepts volunteers from all over the world for reforestation and other conservation work.

The UK-based Task Brasil (www.taskbrasil.org.uk) is another organization that places volunteers in Rio.