To provide a pipe linking clamp, which easily and positively maintains engagement between an engaging projection and an engaging recess thereof when the clamp is applied to link mutually perpendicular pipes, and prevents occurrence of inconveniences, such as damages in a bound body.

The pipe linking clamp 11 consists mainly of a pair of clamp main bodies 12 linked to each other. One of the clamp bodies 12 includes a male screw rod 28, which has a restraining member 32 axially supported at its base-side end in a rotatable manner. The restraining member 32 includes an intermediate wall portion 33, and an engaging piece 34, having the engaging projection 36 protruded from the center thereof, is protruded from an end of the intermediate wall portion 33. The intermediate wall portion 33 and the engaging piece 34 are formed arcuately conforming to a peripheral surface of a pipe section 14. The other clamp body 12 includes a rigid wrapping body 13 which has the engaging recess 35 formed therein. When the engaging piece 34 engages with the engaging recess 35, the engaging projection 36 engages with an inner surface of the engaging recess 35.