Threats by pests to cultural heritage are now more than ever on the agenda for museums, archives, libraries and historic houses. It is therefore important that professionals within the sector, such as scientists, conservators, curators, archivists, librarians, collection managers and others, meet and discuss methods of dealing with the challenges posed by pests. Following the successful IPM conferences in Piacenza in 2011, Vienna in 2013 and Paris in 2016, the 4th international conferenceon Integrated Pest Management, IPM 2019, Integrated Pest Management for Cultural Heritage, was held in Stockholm 21–23 May 2019. In all, 160 delegates from 23 countries participated.