The invention relates to a center arm rest (01) for use in a vehicle with a console part (03), which can be directly or indirectly attached to the vehicle body, and with an arm rest (05), which is mounted on the console part so as to be swivelable about a swivel axis between a lower use position and an upper rest position, the arm rest (05) having a top side (07) for resting an arm thereon, which is padded at least in sections, and a bottom side (08) on the opposite side, which is padded at least in sections and forms part of a back rest, comprising a tray device (11), which is swivelably mounted in the center arm rest (01) and which is in an upper non-use position behind the arm rest (05) when the arm rest (05) is in the rest position, and which is swivelable about a hinge axis (12) between the non-use position and a lower use position having the tray device (11) resting on the top side of the arm rest (05) when the arm rest (05) is in the use position.