The Investment Coordinating Board (BKPM) said that foreign direct investment (FDI) commitments in July-September were 78.3 trillion rupiah ($6.4 billion), compared with 78 trillion rupiah in April-June.
In both periods, the commitments were 16.9 percent higher than a year earlier, in rupiah terms.
On a year-on-year basis, FDI growth has been on a downward trend in Indonesia, contributing to the slowdown in economic growth.
The main areas attracting FDI in the third quarter were transportation, warehousing, telecommunications and mining.
The board's FDI data does not include investment in oil and gas as well as the banking sector.