A rotor of a turbomachine has a rotor base body and a plurality of rotor blades. Every rotor blade has a blade body and a coupling element segment. The coupling element segment of every rotor blade is contoured at a first side and at a second side opposite the first side that, at the first side and at the second side, a radially outer edge of the respective coupling element segment extends substantially in axial direction and a radially inner edge of the respective coupling element segment extends substantially in axial direction respectively delimit two surfaces separated from one another by a separating line. In at least one circumferential position of the rotor between two directly adjacent rotor blades, the separating lines run approximately parallel to, or in alignment with, the mounting direction of the rotor blades at the rotor base body, which mounting direction is defined by the blade roots. In every other circumferential position between two directly adjacent rotor blades, the separating lines formed at directly adjacent sides of the coupling element segments are oblique relative to the mounting direction.