A new species of the genus Rambutanura Deharveng, 1988 from northern Vietnam is described and illustrated. R. carcharía sp. nov. is related to Rambutanura nuilayana (Yosii, 1976) described from Malaysia. The new species is characterised by tridentate mandible, moderate plurichaetosis on tubercles and absence of sensilla on head and thorax I. tsa