A cutting apparatus includes a platen receiving an object to be cut, a carriage with a cartridge holder to which a cutter cartridge is detachably attachable and a pressing unit located on the carriage or the cartridge holder and switchable between a fixing position and an open position. The cartridge holder is formed with an opening through which the cutter cartridge is inserted and has an abutted portion against which an abutment abuts and which is a receiving portion having a tapered surface contacting with at least a part of the abutment. The receiving portion includes a plurality of elastic portions and a blocking portion. The blocking portion controls a position of a casing of the cutter cartridge. The casing abuts against the blocking portion when the cutter cartridge is inserted through the opening and the cartridge holder and the pressing unit is switched to the fixing position.