Along with the numerous trauma-related impacts of violence and its effects on other health outcomes, the social toll of violence is further exacerbated by economic costs that represent formidable threats to fiscal growth and development. A companion piece to a review of the scientific literature describing the nature, magnitude and impact of violence on health (Matzopoulos, Bowman, Butchart & Mercy, 2008) in this issue, this paper reviews the current knowledge base on violence and development with a specific focus on low- to middle-income countries. It describes how violence impacts on all eight goals of the Millennium Development Plan and exerts a considerable economic burden on already stressed state systems and social spending. Violence will become an increasingly important threat to development and is receiving growing recognition among the global health community and within health ministries. The near absence of violence prevention within the global development agenda is, however, cause for concern. There is an urgent need to mobilise the international development community to provide financial and technical support for intersectoral collaboration, multilateral research cooperation and the development of research capacity towards addressing violence as a significant threat to development.