The One Health EJP (OHEJP) Final “Summer” School 2022 “Sustainability in One Health – how can it be achieved?” was held from 5th to 7th December 2022. The event focused on sustainability, since it is at the core of the One Health approach to optimise the health of people, animals, plants, and ecosystems and needs to be at the centre of the training of young One Health scientists and practitioners. Sustainable solutions must be adopted that recognise the importance of animal welfare, biodiversity and ecosystem integrity for overall health and well-being, now and for future generations. This Final School was organised by the Local Organising team at University of Surrey in Guildford – UK, led by Roberto La Ragione (Professor of Veterinary Microbiology and Pathology at the School of Veterinary Medicine and Head of the School of Biosciences). The event was organised and hosted in collaboration with the OHEJP Work Package 6 (WP6) team and Communications team based at the University of Surrey, UK. The event was held online to reach a wider international audience. In total, over 200 scientists from countries across the globe participated. The event was a major success as it provided the first international training initiative entirely devoted to sustainability to a multidisciplinary audience of delegates and involved many OHEJP partners as well as OHEJP Stakeholders. The testimonials from the delegates provide telling evidence of the Final School success.