The FIKK UNY Tennis Court is a sports facility available to the general public. This study aims to analyze the relationship between promotion and service quality with training interest and customer satisfaction at the tennis court at the Faculty of Sport and Health Sciences, Yogyakarta State University (FIKK UNY). This research is a correlational study with a quantitative approach. This research was conducted on customers of the FIKK Tennis court, Yogyakarta State University, with a random sampling system with incidental sampling criteria of customers who come to play at the FIKK Tennis court, Yogyakarta State University with a sample of 120 people. Data collection was carried out on June 23-30, 2025. Data were collected using a questionnaire that had been tested for validity and reliability. The analysis technique used in this study was simple linear regression. Data analysis in this study used the Pearson Correlation Test. The results of this study indicate that there is a significant correlation between promotion and the interest in training customers of FIKK Yogyakarta State University tennis courts with a Pearson correlation value = 0.397 and a pvalue (sig-2tailed) of 0.022. There is a significant correlation between service quality and the interest in training customers of FIKK Yogyakarta State University tennis courts with a Pearson correlation value = 0.909 and a p-value (sig-2tailed) of 0.000. There is a significant correlation between promotion and customer satisfaction of FIKK Yogyakarta State University tennis courts with a Pearson correlation value = 0.541 and a p-value (sig-2tailed) of 0.001. There is a significant correlation between service quality and customer satisfaction or members of FIKK Yogyakarta State University tennis courts with a Pearson correlation value = 0.877 and a p-value (sig-2tailed) of 0.000. There is a significant influence between Promotion and Service Quality with Interest in Training and Customer Satisfaction of FIKK UNY Tennis Courts.