The Lodger is a horror novel by English author Marie Adelaide Belloc Lowndes. The short story was first published in the January, 1911 edition of McClure's Magazine, in 1911. Belloc Lowndes wrote a longer version of the story, which was published as a series in the Daily Telegraph in 1913 with the same name. Later that year, the novel was published in its entirety by Methuen Publishing.