The objective of this research was to determine the relationship between internal and external Clients with the Quality of Service provided by the company Envases Leylita S.A.C. - 2019. The following problem was formulated: In what way do internal and external customers relate to the quality of the service provided by the company Envases Leylita S.A.C. - 2019? Whose hypothesis was: Internal and external customers are positively and significantly related to the quality of service of the company Envases Leylita S.A.C. - 2019. The research methodology was developed according to the type applied with a non-experimental design. The study population consisted of 43 internal and external clients. As a result, we have: 36.84% of internal clients (collaborators) indicated that satisfaction in the company Envases Leylita SAC is bad, 36.84% that it is regular and 26.32% that it is good. On the othe...