The aim of the paper was to determine the extent to which FDI inflows in the infrastructure sector, the manufacturing sector and the agricultural sector impact Kenya's economic growth. The results of the study show that FDI in the infrastructure sector has had a positive and significant impact on economic growth while the manufacturing and agriculture sectors have had a positive although such positive effect were insignificant. Unlike the manufacturing sector foreign direct investment inflows to the agricultural sector are relatively small which may be the cause of little impact.