A vehicle body front structure has: an object detection device disposed in a vehicle front end section of a vehicle to detect an object ahead of the vehicle; and a pair of bracket members which are spaced apart from each other in a vehicle width direction and which support the object detection device. Each of the pair of bracket members includes: a forwardly extending portion that extends forward from a vehicle body member; and a downwardly extending portion that extends downward from the forwardly extending portion and supports the object detection device. The vehicle body front structure further has a bracket member locking member which couples the forwardly extending portions to each other in the vehicle width direction and to which an exterior member of the vehicle is attached.