The Distinguished Service Order was instituted in 1968.
The Order may be awarded to any person who has performed within Singapore any act or series of acts constituting distinguished conduct. In special circumstances, the order may be awarded to any person who has performed outside Singapore any act or series of acts constituting distinguished conduct.
The Badge of the Distinguished Service Order consists, on the obverse side, of a bronze enamelled circle depressed inwards on a 4 opposite points with the words "DARJAH UTAMA BAKTI CEMERLANG" in letters of gold inscribed thereon. A wreath in green enamel surrounds the circle. In the centre of the circle is a red shield on a white enamelled background bearing a crescent and 5 stars with a scroll below carrying the inscription "MAJULAH SINGAPURA". The reverse side of the Badge bears the State Arms.
The Badge of the Distinguished Service Order is to be worn as a neck decoration pendant from a ribbon which consists of a red centre band flanked on each side by a white stripe with a narrow stripe followed by a red band and a white band, in that order.