The Monument war memorial beside the A18 in Brigg is the latest structure in the town to be afforded grade two listed status.
It's inclusion on the national register of protected assets was mentioned during Brigg Town Council's latest meeting.
Historic England says it is a First World War memorial dating from 1919, with later additions for the Second World War.
Historic England sees it as an imposing memorial in the Classical style, with fine carving by Yorkshire sculptor Joseph Thewlis.
Brigg's war memorial was unveiled on June 15, 1919, remembering 105 local servicemen who died during the so-called war to end all wars.
Brigg Town Council plans to renovate the Monument ahead of 2018 - the 100th anniversary of the ending of the First World War.
Although we normally talk of listed buildings, some bridges (including Brigg's County Bridge and the one at Horkstow) are also included on the national register, together with some memorials and other structures of note.