| 5th Light Horse Brigade | |
|---|---|
 A trooper of the 15th Light Horse Regiment | |
| Active | 1902–1921 |
| Country |  Australia France |
| Allegiance | Australian Crown |
| Branch | Australian Army |
| Type | Mounted Infantry |
| Size | Brigade |
| Part of | Australian Mounted Division |
| Equipment | Horse |
| Engagements | Sinai and Palestine Campaign |
| Insignia | |
| Unit colour patch |  |
The 5th Light Horse Brigade was a mounted infantry brigade of the First Australian Imperial Force (AIF) that served during World War I. The brigade was initially formed as a part-time militia formation in the early 1900s in Queensland. During World War I, the brigade was formed in Palestine in July 1918 following the disbandment of the Imperial Camel Corps. At this time, the brigade consisted of two Australian Light Horse regiments and a French cavalry regiment, and was supported by British and New Zealand artillery and machine gun troops. It served in the Middle Eastern theatre of World War I in the Sinai and Palestine Campaign as part of the Australian Mounted Division, but only saw limited operations before the war ended, taking part in the capture of Damascus in September and October 1918. After the war, the AIF light horse regiments were demobilised and disbanded; however, the brigade briefly existed as a part-time militia formation in Victoria until 1921 when its regiments were reorganised into cavalry brigades.