RT Journal Article A1 Rachman Mulyandi A1 B Wishman S` Siregar A1 Elizabeth Elizabeth A1 Ridnawati Ridnawati A1 Dede M. Riski T1 The role of internal marketing in improving service quality: A study of service companies JF Journal of Economics and Business Letters YR 2026 VO 6 IS 3 SP 75-85 DO 10.55942/jebl.v6i3.1869 AB This study examines the role of internal marketing in improving service quality at service companies. The research method employed in this study is a qualitative approach using a literature review. This study highlights that internal marketing significantly increases employee satisfaction, engagement, and commitment, which ultimately has a positive impact on the quality of service provided. Effective internal marketing practices, such as good communication, training, and recognition, play a crucial role in boosting employee motivation and performance. The research findings confirm that internal marketing is a strategic investment in human resource management that can optimize organizational performance by improving service quality. By prioritizing internal marketing, companies can create a work environment conducive to innovation, collaboration, and employee well-being, thereby supporting the achievement of sustainable organizational performance. K1 internal marketing, service quality LK https://journal.privietlab.org/index.php/JEBL/article/view/1869 ER