The major purpose of the present study was to assess the role of social accountabilityrnprogram in promoting social inclusion of vulnerable people in public service delivery at Woredarn4 of Arada sub city.It specifically examinedthe ways and the extent to which social accountabilityrnenhances social inclusion of vulnerable groups in public service delivery.In order to address thernbasic research questions of the study, a descriptive research design was employed. To that effect,rnthe study employed mixed methods in collecting the dataand analysis was made by using bothrninferential (SPSS version 23.0) and thematic techniques.The selection of samples followed multistagernsampling procedure. A total of 95 participants were selected using simple randomrnsampling and stratified random sampling techniques coupled with purposive sampling.rnGenerally, the current study revealedthat social accountability program made a contribution forrnsocial inclusion of vulnerable groups (PWDs, people living with HIV/AIDS, elders, women,rnchildren, and youth) in the process of public service delivery. Specifically, the findings showedrnthat social accountability program enhanced the basic facets of social inclusion which are activernand meaningful participation and access to basic services mainly at health (health center) andrneducation (primary school) services. Accordingly, the present study found out that the socialrnaccountability program was successful in enhancing the capacity of vulnerable people,rnenhancing effective interaction between vulnerable groups (or service users) and public servicernproviders, and attitude and behavioral changes of vulnerable groups towards service providers.rnIn general, based on the findings of the study it is concluded that there is a direct link betweenrnSocial Accountability and Social Inclusion. This implies that social inclusion of vulnerablernpeople is promoted through social accountability in such a way that enhancedparticipation andrnaccess to serviceof vulnerable groups are ensured in public service delivery. Hence, socialrnaccountabilityshould be integrated and implemented along with each development initiatives andrnshould be institutionalized in all sectors of the public service.rnKey words: Social Accountability, social inclusion, participation, public servic, vulnerablerngroups