A handle for door or window having a movable sash, comprising: - a grip having a gripping portion and a base portion or neck facing, in use, a part of the outer profile or wing of the movable sash; the grip being rotatable about a first axis; - a shaft protruding from the grip and passing, in use, through the outer wing of the movable sash; - a kinematic unit positioned, in use, in the proximity of a longitudinal channel inside the profile of the sash in which at least one control rod slides and is coupled, in use, to the protruding shaft; the kinematic unit being connected to at least one control rod designed for converting the rotational movement of the grip into a translational movement of the rod, in both directions; characterised in that it comprises: - a first annular kinematic component housed in a seat made in the neck of the grip; the first component having at least one sector with a toothed profile along its circumference and being connected to the neck in such a way as to rotate around the first axis of rotation of the grip; - a second kinematic component, having a toothed profile, housed in the seat and meshing in a zone of the sector with a toothed profile of the first component; the second component being connected to the shaft protruding in such a way as to allow a rotation of the shaft about a second axis parallel to, and different from, the first axis and so transmit the rotational movement from the grip to the protruding shaft to rotate the latter around the second axis, wherein the protruding shaft comprises at least, along the second axis, a first portion defined by the second kinematic component, a second intermediate guide portion with a cylindrical cross-section and a third portion, distal to the second component, with a polygonal cross-section for coupling with the kinematic unit. - a grip having a gripping portion and a base portion or neck facing, in use, a part of the outer profile or wing of the movable sash; the grip being rotatable about a first axis; - a shaft protruding from the grip and passing, in use, through the outer wing of the movable sash; - a kinematic unit positioned, in use, in the proximity of a longitudinal channel inside the profile of the sash in which at least one control rod slides and is coupled, in use, to the protruding shaft; the kinematic unit being connected to at least one control rod designed for converting the rotational movement of the grip into a translational movement of the rod, in both directions; - a first annular kinematic component housed in a seat made in the neck of the grip; the first component having at least one sector with a toothed profile along its circumference and being connected to the neck in such a way as to rotate around the first axis of rotation of the grip; - a second kinematic component, having a toothed profile, housed in the seat and meshing in a zone of the sector with a toothed profile of the first component; the second component being connected to the shaft protruding in such a way as to allow a rotation of the shaft about a second axis parallel to, and different from, the first axis and so transmit the rotational movement from the grip to the protruding shaft to rotate the latter around the second axis, wherein the protruding shaft comprises at least, along the second axis, a first portion defined by the second kinematic component, a second intermediate guide portion with a cylindrical cross-section and a third portion, distal to the second component, with a polygonal cross-section for coupling with the kinematic unit.