| 3rd/9th Light Horse Regiment (South Australian Mounted Rifles) | |
|---|---|
&sq=&lang=&file=File:3_19_South_Australia_Mounted_Rifles_cap_badge.png){kind=icon} Cap badge of the 3rd/9th Light Horse (South Australian Mounted Rifles) | |
| Active | 1948–present |
| Country |  Australia |
| Branch | Australian Army |
| Type | Light cavalry |
| Part of | 9th Brigade |
| Garrison/HQ | Adelaide |
| Motto(s) | Nec Aspera Terrent |
| March | Quick – Fare Thee Well Inniskilling |
| Anniversaries | 26 Feb 1840 |
| Commanders | |
| Current commander | Major Matthew Walsh |
| Colonel-in-Chief | King Charles III (Colonel-in-Chief, RAAC) |
| Insignia | |
| Unit colour patch | &sq=&lang=&file=File:3rd_9th_South_Australian_Mounted_Rifles_UCP.PNG){kind=small} |
| Abbreviation | 3/9 SAMR |
The 3rd/9th Light Horse (South Australian Mounted Rifles) (3/9 SAMR) is a Reserve light cavalry regiment of the Australian Army based in Smithfield, South Australia. It is constituted of a single squadron. It is part of the Royal Australian Armoured Corps (RAAC), the regiment is attached to the 9th Brigade, and currently operates Hawkei Protected Mobility Vehicle - Light (PMV-L). On 26 October 2022, 9th Brigade transitioned as a Direct Command to Forces Command (FORCOMD) as part of an Army wide transformation. 3rd/9th Light Horse (South Australian Mounted Rifles), 1st Armoured Regiment officially commenced on 1 November 2022.