| Unit Name: | 2nd/4th Battalion, Royal Australian Regiment |
| Country: | Australia |
| Dates: | 15 August 1973 – 1 February 1995 |
| Garrison: | Lavarack Barracks, Townsville, Australia |
| Motto: | Duty First |
| Nickname: | The Premier Battalion |
| Colors: | Black and scarlet |
| Anniversaries: | 15 August (amalgamated) 1 February (de-linking) |
The 2nd/4th Battalion Royal Australian Regiment (2/4 RAR) was an Australian Army infantry battalion. 2/4 RAR was formed on 15 August 1973 by linking 2nd Battalion, Royal Australian Regiment and 4th Battalion, Royal Australian Regiment. 2/4 RAR was unlinked to re-form 2 RAR and 4 RAR on 1 February 1995. Throughout its existence 2/4 RAR was based at Lavarack Barracks in Townsville and formed part of the 3rd Brigade.
Elements of 2/4 RAR served in Malaysia as Rifle Company Butterworth from 1975 until 1989, Cambodia in 1993 and Rwanda in 1994. In addition, 53 personnel were attached to 1 RAR during Operation Solace which saw a battalion group based around 1 RAR deploy to Somalia in 1993.
2/4 RAR maintained the following alliances:[1]
. David Horner. Bou, Jean. Duty First: A History of the Royal Australian Regiment. 2nd. 2008. Allen & Unwin. Crows Nest. 978-1-74175-374-5.