The 128th Light Anti-Aircraft Regiment (128th LAA Rgt) was an air defence unit of Britain's Royal Artillery during World War II. The regiment was formed in March 1942 from the short-lived 87th Searchlight Regiment, Royal Artillery, which had only been raised in the previous year as part of the rapid expansion of Anti-Aircraft (AA) defences. It served in AA Command until near the end of the war, when it was converted into an infantry battalion for garrison duties in North West Europe.