The Light Infantry and Mercian Volunteers was a short-lived infantry regiment of the British Army, in existence from 1971 to 1975.

The battalion was formed on the 1 April 1971, from the cadres of former Midland infantry battalions that had been reduced as a result of the 1966 Defence White Paper and formation of the much smaller TAVR.

[1] Its initial structure was:[2][3] Only four years later, however, the regiment was broken up and the companies were distributed amongst other battalions.

Namely: A, B, and E Companies to the 2nd Battalion, Mercian Volunteers as A, B, and D Companies respectively; C Company to 5th Battalion, The Light Infantry, as E Company;[5] and D Company to 6th Battalion, The Light Infantry,[5] with the same lettering.

[2][3] The regiment didn't have an Honorary Colonel as a whole, however from 1971–1972 each company maintained their own Deputy Honorary Colonel, in succession to the previous unit.