This chapter indicates the overview of Foreign Direct Investment (FDI); FDI entries and export; FDI and spillover effects; FDI, human capital, and absorptive capacity; and the significance of FDI in the global economy. FDI is an investment in a business by an investor from another country for which the foreign investor has control over the company purchased. FDI offers a source of external capital and increased revenue. FDI can be a tremendous source of external capital for the developing countries, which can lead to economic development. Through FDI, capital goes to whatever businesses have the economic growth anywhere in the world. FDI helps in increasing the output through the utilization of advanced technology and management techniques. FDI benefits investors, businesses, and the global economy. FDI contributes to foreign exchange earnings, employment creation, and the increases in incomes in the global economy.