Singapore was the biggest investor among the 10-nation Asean bloc in India in 2008 with FDI worth Rs 15,775.90 crore, a study by industry body Ficci said.
Investment from the island city state was 1,416.90 crore in 2005.
Malaysia was a distant second with an investment of Rs 453.80 crore last year, which, however, is a big jump from Rs 21.30 crore in 2005.
"The interest of these two nations and other countries in the Asean bloc is expected to get a shot in the arm after the signing of the free trade pact between India and Asean next month," the chamber said.
FDI flows from Indonesia, too, rose to Rs 24.50 crore in 2008 from Rs 4.20 crore in 2005.
However, FDI flows from Thailand and the Philippines declined in 2008. Thailand invested Rs 12.90 crore against Rs 23.30 crore in 2005 while Philippines' investment fell from Rs 4.20 crore in 2005 to 7 lakh in 2008.
Sectors that investors found attractive included petroleum and natural gas, IT and mining and construction.
Vietnam, Laos, Cambodia and Brunei did not make any investment in 2008.