Abstract: This research project established the relationship between supplier relationship management and performance of Fast Moving Consumer Goods (FMCG) manufacturing firms in Nairobi City County, Kenya. How manufacturing sector also generates revenues for the government. This was from 95 manufacturing companies in Nairobi City County. Therefore, this was the total population. The firms to be targeted included the different manufacturing sectors of the economy textiles, foods, chemicals, wood and paper, building materials, water and drinks, breweries, metals and toiletries.