Kasarani Constituency is an electoral constituency in Nairobi. It is one of seventeen constituencies of Nairobi City County. The entire constituency is located within Nairobi City County, and has an area of 152.60 km2 (58.9 sq mi), making it the second-largest constituency in Nairobi after Lang'ata. It borders Ruaraka, Embakasi Central, Embakasi North, Embakasi East, Roysambu constituencies to the west; Ruiru constituency to the north; Kangundo constituency to the east and Mavoko constituency to the south-east.