Abstract: A hand-operated binding device which may be used to bind objects, for example, a bundle of electric wires, with a binding band. The binding device is provided with a means for transporting a binding band by a manual operation, the binding band comprising a band portion with engagement portions and a head portion with a hole and a locking projection. The binding device is further provided with a pair of first and second guide members capable of opening and closing as well as reducing a space for accommodating an object to be bound. In addition, the binding device is provided with a means for driving at least one of the first and second guide members by a manual operation. The binding band that is transported by the transport means is bent around the object in the space through the first and second guide members, and the band portion with the engagement portions is passed through the hole in the head portion by utilization of the elastic deformation of the locking projection.