This article lists the changes to virus taxonomy approved and ratified by the International Committee on Taxonomy of Viruses (ICTV) in April 2016.Changes to virus taxonomy (the Universal Scheme of Virus Classification of the International Committee on Taxonomy of Viruses [ICTV]) now take place annually and are the result of a multi-stage process. In accordance with the ICTV Statutes ( http://www.ictvonline.org/statutes.asp ), proposals submitted to the ICTV Executive Committee (EC) undergo a review process that involves input from the ICTV Study Groups (SGs) and Subcommittees (SCs), other interested virologists, and the EC. After final approval by the EC, proposals are then presented for ratification to the full ICTV membership by publication on an ICTV web site ( http://www.ictvonline.org/ ) followed by an electronic vote. The latest set of proposals approved by the EC was made available on the ICTV website by January 2016 ( https://talk.ictvonline.org/files/proposals/ ). A list of these proposals was then emailed on 28 March 2016 to the 148 members of ICTV, namely the EC Members, Life Members, ICTV Subcommittee Members (including the SG chairs) and ICTV National Representatives. Members were then requested to vote on whether to ratify the taxonomic proposals (voting closed on 29 April 2016). AD -, 24 Woodland Way, Stevenage, Herts, SG2 8BT, UK. firstname.lastname@example.org. Department of Microbiology, University of Alabama at Birmingham (UAB), BBRB 276, 845 19th ST South, Birmingham, AL, 35294-2170, USA. Sunfield, Dawney Hill, Pirbright, Woking, Surrey, GU24 0JB, UK. Veterinary Medical Research Institute, Hungarian Academy of Sciences, Hungaria krt. 21, 1143, Budapest, Hungary. Invasive Insect Biocontrol and Behavior Laboratory, USDA, 10300 Baltimore Avenue, Bldg 007 Barc-West, Beltsville, MD, 20705, USA. The Pirbright Institute, Ash Road, Pirbright, Surrey, GU24 0NF, UK. Departments of Food Science, Molecular and Cellular Biology and Pathobiology, University of Guelph, Guelph, ON, N1G 2W1, Canada. Department of Microbiology, Institut Pasteur, 25 rue du Dr Roux, 75015, Paris, France. NIH/NIAID/DCR Integrated Research Facility at Fort Detrick (IRF-Frederick), B-8200 Research Plaza, Fort Detrick, Frederick, MD, 21702, USA. Division of Molecular and Cellular Biosciences, National Science Foundation, Arlington, VA, USA. Department of Microbiology and Immunobiology, Harvard Medical School, 77 Ave Louis Pasteur, Boston, MA, 02115, USA. Department of Biochemistry, Molecular Biology, Entomology and Plant Pathology, Mississippi State University, 100 Old Hwy 12 Mail Stop 9775, Mississippi State, MS, 39762, USA. Summerland Research and Development Centre, Agriculture and Agri-Food Canada, 4200 Highway 97, Summerland, BC, V0H 1Z0, Canada. Department of Cellular and Molecular Medicine, Faculty of Biomedical Sciences, University of Bristol, University Walk, Bristol, BS8 1TD, UK. Nuffield Department of Experimental Medicine, University of Oxford, Peter Medawar Building, South Parks Road, Oxford, OX1 3PS, UK. School of Biological Sciences and Biomolecular Interaction Centre, University of Canterbury, Private Bag 4800, Christchurch, 8140, New Zealand. Dep. de Fitopatologia/BIOAGRO, Universidade Federal de Vicosa, Vicosa, MG, 36570-900, Brasil. Department of Medical Microbiology, Leiden University Medical Center, P. O. Box 9600, E4-P, rm. E4-72, 2300 RC, Leiden, The Netherlands. MRC-University of Glasgow Centre for Virus Research, Sir Michael Stoker Building, 464 Bearsden Road, Glasgow, G61 1QH, UK.