Abstract: A combination scissors and paper knife comprises a pair of scissors members each having a blade and a handle formed integrally with each other through a pivotal portion having a pivotal hole bored therein and a clasp inserted into the pivotal holes in the pivotal portions for pivotally attaching the pair of scissors members to each other, at least one of the backs of the blades having a paper knife edge put thereon. The pivotal portions are provided one each with control portions for regulating the rotation of the blades and also provided on the end faces thereof unconnected relative to the handles one each with segmental surfaces of circles with the pivotal holes as their respective centers adapted to draw a continuous arc when the blades are opened. It is safely used as scissors without pinching fingers etc. between the ricassos and, in its closed state, advantageously used as a paper knife.