Living Reviews in Relativity is a peer-reviewed, full open access, and exclusively online journal, publishing freely available reviews of research in all areas of relativity. Articles are solicited from leading authorities and are directed towards the scientific community at or above the graduate-student level. They provide critical reviews of the current state of research and available sources in the fields they cover. All contributions are subject to single-blind peer review by at least two referees.Living Reviews is unique in maintaining a suite of high-quality reviews, which are kept up-to-date by the authors. This is the meaning of the word "living" in the journal's title.