Abstract: A multi color wire marker comprises a base, a slideway, a carriage housing to which are mounted rollers for respectively feeding and gathering hot foil colored tape, a main ram housing and an anvil against which a wire to be marked is supported. A plurality of rollers carrying different colored tapes are mounted on the carriage housing whereby anyone of the colored tapes can be chosen to mark the wire by indexably moving the carriage housing until the appropriate tape is lying between the ram and the anvil. The ram which is heated to an adjustable temperature is then pressed against the tape which presses the wire against the anvil, the heat and pressure making colored products mounted on the tape melt off and color mark the wire.