| Vietnam Distinguished Service Order | |
|---|---|
&sq=Qlik&lang=&file=File:Distinguished_Service_Order_(Vietnam).png) Badge of the Vietnam Distinguished Service Orders (First class ribbons on top row & second class on bottom row) | |
| Type | Two-grade award. The two classes were: Officers Enlisted |
| Awarded for | "meritorious or heroic deeds related to war time operations" |
| Presented by |  South Vietnam |
| Eligibility | Military personnel of South Vietnam and foreign countries |
| Campaign(s) | Vietnam War |
| Status | No longer awarded |
| Last awarded | 1974 |
&sq=Qlik&lang=&file=File:Vietnam_Army_Distinguished_Service_Order_Ribbon-First_Class.svg){kind=small} &sq=Qlik&lang=&file=File:Vietnam_Air_Force_Distinguished_Service_Order_Ribbon-First_Class.svg){kind=small} &sq=Qlik&lang=&file=File:Vietnam_Navy_Distinguished_Service_Order_Ribbon-First_Class.svg){kind=small} &sq=Qlik&lang=&file=File:Vietnam_Army_Distinguished_Service_Order_Ribbon-Second_Class.svg){kind=small} &sq=Qlik&lang=&file=File:Vietnam_Air_Force_Distinguished_Service_Order_Ribbon-Second_Class.svg){kind=small} &sq=Qlik&lang=&file=File:Vietnam_Navy_Distinguished_Service_Order_Ribbon-Second_Class.svg){kind=small} Army, Air Force & Navy Ribbon bars of each respective Vietnam Distinguished Service Order (First class ribbons on top row & second class on bottom row) | |
| Precedence | |
| Next (higher) | Military Merit Medal |
| Next (lower) | Meritorious Service Medal |
The Army Distinguished Service Order (Vietnamese: Lục-Quân Huân-Chương), Air Force Distinguished Service Order (Vietnamese: Không-Lực Huân-Chương), and Navy Distinguished Service Order (Vietnamese: Hải-Quân Huân-Chương) was a military decoration of South Vietnam which was awarded throughout the years of the Vietnam War. The decoration was bestowed for meritorious or heroic deeds related to wartime operations and was awarded for both combat and non-combat service.
There were two classes of the Army/Air Force/Navy Distinguished Service Order, the first class being for officers and the second class for enlisted personnel. The first class of the order was differentiated by a blossom device centered on the medal and ribbon.
The Army/Air Force/Navy Distinguished Service Order was also provided to foreign militaries, and in the United States military the decoration was considered the equivalent of the Legion of Merit. For foreign officers, the 2nd class of the order was also provided to officers.
The decoration ranked immediately below the National Order of the Republic of Vietnam and the Republic of Vietnam Military Merit Medal. It was among the less commonly bestowed medals, in contrast to such decorations as the Republic of Vietnam Gallantry Cross and Republic of Vietnam Campaign Medal.
The last issuance of the Vietnam Distinguished Service Order was in 1974, before the Fall of Saigon.