A lighting system having at least one lighting unit including a light segment for receiving at least one lamp, at least one connecting element that at least in sections is electrically conductive and at one end of the light segment is mechanically and electrically connected thereto, and at least one connector, which has at least one element circumferentially surrounding a connector middle axis and at least one electrical conductor mechanically connected to or formed by the circumferential element. The connecting element is mechanically connected to the circumferential element of the connector and thereby the at least one lighting unit is mechanically and electrically connected to the connector. The lighting system can be arranged in various positions around the connector middle axis and in every position the lighting unit is mechanically and electrically connected to the connector. Several lighting units can be connected to a common connector.