This document examines the relationship between foreign direct investment (FDI) inflows and real interest rates in five ASEAN economies (ASEAN 5): Indonesia, Malaysia, Philippines, Singapore, and Thailand. It reviews theories and prior studies on determinants of FDI, develops a conceptual model relating FDI to interest rates, GDP, exchange rates, and inflation. Using secondary data from 1987-2012, it employs unit root tests, vector autoregression, and impulse response analysis and finds that real interest rates generally have a negative effect on FDI inflows for the ASEAN 5 economies. The empirical results vary for each country.