The study aimed to identify the quality level of services provided at the Institutions Supporting Investment in Jordan, and to identify the impact of quality of service on investors’ satisfaction level regarding service provided at the Institutions Supporting Investment (responsiveness, assurance, tangibility, empathy, and reliability). In the current study, the population consists of investors that receive services at the Institutions Supporting Investment. The analytical descriptive approach used both theoretically and empirically. The study showed that the level of services provided by the Ministry of Investment was high, and all of them obtained a high application degree, which indicates the importance that the Ministry of Investment attaches to providing services to investors, and there was a statistically significant positive effect between all the dimensions of service quality (responsiveness, assurance, tangibility, empathy, and reliability) and customer satisfaction. The study recommended the need to focus on the sufficient publications to explain the available services, show serious interest in customer complaints, providing services on time and providing sufficient hours to work, answer all inquiries and spreading investor service centers in the governorates to facilitate them.