Established in: 1958
Global presence: 35

VSO is a not-for-profit international development organization charity with a vision for "a fair world for everyone and a mission to create lasting change through volunteering". VSO delivers development impact through a blended volunteer model consisting of international, national, and community volunteers working together to develop the systems and conditions for positive social change.[2] In 2022–23, VSO worked in 35 countries in Africa and Asia.

VSO currently works in the following core programme areas:
Inclusive Education
Health
Livelihoods

And through three core approaches that are relevant to all the areas:
Social Inclusion and Gender
Social Accountability
Resilience

In addition, VSO has a youth focus in which young people are both the beneficiaries of social change outcomes as well as the primary actors in creating the change.