Abstract: A bicycle carrier includes two frames between which a connecting device and an engaging device are respectively disposed. One of the frames has a tongue member extending laterally from a lower end thereof. The engaging device includes a retaining member having an open bottom and a second recess is defined in a peripheral wall of the retaining member and communicates with the open bottom so that a connecting sphere of a car is received in the retaining member via the open bottom and limited by the tongue member.