The ministry reported that Japan ranked second with US$ 5.91 billion, or 24.7 percent of total FDI, followed by Singapore with US$ 4.14 billion, constituting 16.2 percent.
The RoK had a major project worth US$ 2.5 billion of Samsung Display Vietnam in Bac Ninh province.
Japan invested US$ 2.793 billion into building the 1,200 MW Nghi Son 2 thermal power plant in north central Thanh Hoa province.
Meanwhile, Singapore investors were involved in the 1,109 MW Nam Dinh 1 thermal power plant with US$ 2.07 billion in northern Nam Dinh province.
As of September 20, Vietnam attracted US$ 25.4 billion in FDI, up 34.3 percent year on year, reported the ministry.
Of the total, US$ 14.5 billion was poured into 1,844 new projects, while US$ 6.75 billion was injected into 878 underway ones, and US$ 4.16 billion was worth in company shares bought by foreign investors.
The MPI revealed that in the reviewed time, US$ 12.5 billion of FDI was disbursed, a rise of 13.4 percent over the same period last year.