Health Poverty Action is a British international development organization with a mission to support the poorest and most vulnerable people in their effort to achieve better health and wellbeing. Health Poverty Action believes that health is a fundamental human right and the provision of comprehensive primary health care is essential to its realization. Health Poverty Action works with communities, health service providers and policy makers on long term programmes to develop appropriate and responsive primary health care service and to influence policy and practice at all levels. With financial and strategic support from the Comic Relief UK, Health Poverty Action, in partnership with local partner Enhancing Pastoralist Research and Development Alternatives (EPaRDA), has been implementing a project titled ‘Empowering Marginalized Pastoralist Communities (EMPC) to prevent HIV/AIDS and promote the Rights of HIV Positive People’ in the Southern Nations, Nationalities and Peoples Region (SNNPR), South Omo zone, Hamer and Bena-Tsemay woredas (districts) since April 2008. The project was designed to address marginalized pastoralist youth (boys and girls), men and women who are HIV positive as well as those at risk of contracting HIV and was completed in October 2011. This advertised piece of work will contribute to the learning and experience sharing exercise of the two organisations – Health Poverty Action and EPaRDA – together with Comic Relief. The consultancy will focus on a review of the EMPC project to draw out lessons learnt and best practices around providing appropriate services and care for HIV positive pastoralists, and services for those who are at risk of being infected with HIV in Ethiopia. In order to enrich this learning, the consultant will also identify best practice from Health Poverty Action’s wider health programmes for mobile and pastoralist populations that may have practical implications for future work on HIV/AIDS. Finally, the consultant may also draw from the experience of other organizations related to mobile and pastoralist population health interventions that could be applied to HIV mitigation and prevention programming for pastoralists in Ethiopia. The consultant is expected to produce a short (maximum 10 pages) best practice paper to be disseminated amongst government health service providers, pastoralist organisations and other stakeholders in Ethiopia. The paper will be used to describe how HIV and other health services can be tailored to meet the needs of mobile populations and provide examples of where HPA has been successful in offering these services, particularly at low-cost. The paper’s main case study will be drawn from the Comic Relief EMPC project (described in section 1) but examples from other HPA projects and those delivered by other organisations working with pastoralists may be included. Ultimately the paper will make a set of short recommendations for the development and delivery of health services to address HIV/AIDS amongst pastoralist communities in the future. From this longer paper the consultant will also distil the major findings into a 2-3 page lessons-learnt article which can be published in an academic or community of practice journal, e.g. the WHO-Bulletin, in order to share the learning from this project more widely. Keywords: Health and medical