The National Collection of Plant Pathogenic Bacteria (NCPPB) is a bacterial culture repository hosted and maintained by Fera Science in York, United Kingdom. It specializes in bacterial plant pathogens and related bacteria. The NCPPB maintains over 3,500 strains and cultures which can be ordered online for use in education and research. The service is funded by the UK Government via the Department for Environment, Food and Rural Affairs (Defra) and provides support to the UK Plant Health Service.