| 1st/15th Royal New South Wales Lancers | |
|---|---|
 Cap badge of the 1st/15th Royal New South Wales Lancers | |
| Active | 1885 – present |
| Country | Australia |
| Branch | Army |
| Type | Line cavalry |
| Role | Light cavalry |
| Size | One regiment |
| Part of | 5th Brigade |
| Garrison/HQ | Lancer Barracks, Parramatta |
| Motto(s) | Tenax in Fide (Steadfast in Faith) |
| March | Quick – El Abanico Slow – Scipio |
| Anniversaries | 3 March – Regimental birthday |
| Battle honours | Belmont, Sari Bair, Second Gaza, Sattelberg, Balikpapan |
| Commanders | |
| Current commander | LTCOL Colin Shadbolt |
| Colonel-in-Chief | King Charles III (Colonel-in-Chief, RAAC) |
| Colonel of the Regiment | Brigadier Phillip Bridie, AM, ADC |
| Insignia | |
| Unit colour patch |  |
The 1st/15th Royal New South Wales Lancers is an active Australian Army Reserve Light Cavalry regiment. The regiment has its headquarters at Lancer Barracks in Parramatta, a suburb in Western Sydney, New South Wales. Lancer Barracks is the oldest Military Barracks on mainland Australia and dates from 1819.