The Cameronians (Scottish Rifles) was a rifle regiment of the British Army, the only regiment of rifles amongst the Scottish regiments of infantry. It was formed in 1881 under the Childers Reforms by the amalgamation of the 26th Cameronian Regiment and the 90th Perthshire Light Infantry. In 1968, when reductions were required, the regiment chose to be disbanded rather than amalgamated with another regiment, one of only two infantry regiments in the British Army to do so, with the other being the York and Lancaster Regiment. It can trace its roots to that of the Cameronians, later the 26th of Foot, who were raised in 1689. The 1881 amalgamation coincided with the Cameronian's selection to become the new Scottish Rifles.

A rifle regiment is a military unit consisting of a regiment of infantry troops armed with rifles and known as riflemen. While all infantry units in modern armies are typically armed with rifled weapons the term is still used to denote regiments that follow the distinct traditions that differentiated them from other infantry units.