Singh is here to attend for the fourth India-Brazil-South Africa (IBSA) and the Brazil, Russia, India, China (BRIC) summits to be held on Apr 15 and Apr 16 respectively.
Singh was received by Brazil's Defence Minister Nelson Jobin.
The fourth IBSA summit will see Singh, Brazil President Lula da Silva and South African President Jacob Zuma participating in the summit.
IBSA is a unique forum that brings together India, Brazil and South Africa on one platformto face and discuss ways to resolve common challenges.
All three countries are developing nations, plural, multi-cultural, multi-ethinic, multi-lingual and multi-religious.
After attending IBSA, Singh will take part in the BRIC (Brazil, Russia, India and China) summit on Apr 16. This is the second time that Brasilia is hosting the summit.