An embodiment front vehicle body structure includes an underbody, an upper body coupled to the underbody, a front cowl disposed in front of the upper body, and a cowl support unit connected to the front cowl through a front pillar and a front side member of the upper body. An embodiment cowl support unit includes a cowl lower cross member connected to a front of the front side member along a vehicle width direction, a cowl lower support connected to the cowl lower cross member and the front cowl, and a cowl upper side support connecting an upper portion of the front pillar and the front cowl.