India has the largest thorium reserve in the world at 8,46,000 tonnes, as per data compiled by World Nuclear Association from OECD NEA & IAEA. It's followed by Brazil, Australia, the US and Egypt at 6,32,000 tonnes, 5,95,000 tonnes, 5,95,000 tonnes and 3,80,000 tonnes, respectively. Turkey, Venezuela, and Canada have 3,74,000 tonnes, 3,00,000 tonnes and 1,72,000 tonnes of thorium, respectively.