An intake flow control device includes valve units, a drive shaft, and an actuator. The valve unit includes a housing defining an intake passage therein. A valve shaft is supported between side walls of the housing. The drive shaft connects and drives the valve shafts. The actuator is directly connected to the drive shaft so as to drive a valve mounted to the valve shaft to open or close the intake passage. The valve has a width defined between side ends of the valve, which is larger than a width defined between side walls of the intake passage located at an upstream side of the valve.