The government of Ethiopia has launched economic reforms, financial liberalization measuresrnand restructuring of public institutions with the aim of promoting a competitive environmentrnand efficient services to the public. Gulelle sub _city is one of the ten sub â€“ cities under AddisrnAbaba city government the name given during their new reform program in jun2002rnHowever, the performance of the sub city in providing service is not in a position to meet thernexpectation of service users. There are repeated customer complains. Therefore, the majorrnobjective of this study is assessing the effect of service delivery on customer satisfaction in fivernsectors found under the sub _city, Addis Ababa. To attain this objective, questionnaire wasrndesigned categorized under five dimensions of the SERVEQUAL model. The sample consists ofrn400 respondents selected based on convenience sampling procedure. This study usedrnquantitative research design and both primary and secondary data. The collected data wasrnanalyzed with the help of SPSS version 22.Correlation and multiple regressions were used torninvestigate the relationship between dependent and independent variables. Service quality hasrnbeen defined as an overall judgment similar to attitudes towards the service and generallyrnaccepted as an antecedent of overall customer satisfaction (Zeithaml and Bitner, 1996).rnIn general, the specific empirical findings emerged from the investigation: The five servicernquality dimensions that Service has positive and significant effect on customer satisfaction.rnMajority of customer are not satisfied with the current delivery systemrnTherefore It is better to develop customer resolution when the sector fulfill customer needs .