province of Indonesia, on the island of Sumatra
Riau is a province of Indonesia. It is on the central eastern coast of Sumatra. Its capital city is Pekanbaru. Riau is rich in natural resources. It has petroleum, natural gas, rubber, and palm oil.
- Lesley Potter; et al., The Effects of Indonesia's Decentralisation on Forest and Estate Crops in Riau Province (Bogor: Center for International Forestry Research, 2001), p. 17