The 6th Royal Lancashire Militia (6th RLM) was an auxiliary regiment raised in the county of Lancashire in North West England just before the Crimean War. It later became part of the Manchester Regiment. Although primarily intended for home defence, its battalions saw active service during the Second Boer War. Following conversion to the Special Reserve (SR) under the Haldane Reforms it supplied reinforcements to the fighting battalions during World War I. After a shadowy postwar existence the unit was finally disbanded in 1953.