| 17th (Ruahine) Regiment Ruahine regiment | |
|---|---|
 Cap badge of the Ruahine Regiment | |
| Active | 1914–1921 1941–1948 |
| Country |  New Zealand |
| Branch | New Zealand Military Forces |
| Type | Infantry |
| Garrison/HQ | Masterton |
| Motto(s) | Ad unum omnes (Latin: "Together as one"). |
| Engagements | First World War Second World War |
| Commanders | |
| Honorary Colonel | Sir Walter Buchanan (1916-1921) |
The Ruahine Regiment was a Territorial Force Infantry Regiment of the New Zealand Military Forces. It was briefly raised in the 1910s and saw service in the First World War as part of the Wellington Infantry Regiment. It was formed for a second time during the Second World War and was deployed overseas as part of the 3rd Division but never saw combat.