The 92nd Searchlight Regiment (92nd S/L Rgt) was an air defence unit of Britain's Royal Artillery during World War II.

Regimental Headquarters (RHQ) was formed at Dallam Tower near Milnthorpe, Westmorland, on 1 May 1941 and it was allocated three S/L batteries numbered 556–8.

This layout was an attempt to improve the chances of picking up enemy bombers and keeping them illuminated for engagement by AA guns or night fighters.

While the HAA and Light AA (LAA) units in the brigade were regularly rotated, 92nd S/L Rgt remained with it until 1943.

[6][9] On 24 February 1943, 557 S/L Bty was formally detached from 92 S/L Rgt and became an independent mobile unit in 21st Army Group.