The Voluntary Service for Educational and Social Inclusion is a Bulgarian non-profit association established in Stara Zagora.
The organization was originally founded in 2002 as a Youth Voluntary Service, in order to implement a variety of youth initiatives aimed at stimulating young people's volunteering.
In 2016 the organization is re-registered as a Voluntary Service for Educational and Social Inclusion (ESOs), given the emphasis on volunteering as a whole in the field of education and social inclusion.