Background: Sexually Transmitted Infections (STIs) remain an important public-health concern because of their effects on sexual and reproductive health, quality of life and transmission within communities. The effectiveness of STI services depends not only on appropriate diagnosis and treatment but also on the extent to which services are accessible, confidential, respectful, acceptable and responsive to client needs. Client satisfaction is increasingly recognized as an important indicator of healthcare quality because satisfied clients may be more likely to return for follow-up, disclose relevant information, adhere to treatment and recommend services to others. However, concerns regarding stigma, privacy, confidentiality, waiting time, communication and staff attitudes may influence experiences in STI clinics. Objective: To assess client satisfaction with STI services and identify demographic, clinical, provider-related and facility-related factors associated with satisfaction among clients attending an STI clinic. Methods: A facility-based cross-sectional study was designed among adult clients attending an STI clinic for consultation, testing, treatment, or follow-up. Data were collected using a structured questionnaire containing demographic characteristics and domains assessing accessibility, waiting time, communication, privacy, confidentiality, staff attitude, information provided, involvement in care, cleanliness, treatment and overall satisfaction. Satisfaction was assessed using a five-point Likert scale. Overall satisfaction was categorized according to a predefined composite score. Factors associated with satisfaction were examined using chi-square tests and multivariable logistic regression. The numerical results presented in this manuscript are illustrative and are intended to demonstrate the format and analytical approach; they must be replaced with actual study data before publication. Illustrative Results: Among 250 hypothetical clients, 207 (82.8%) reported overall satisfaction with the STI services. The highest satisfaction was observed for confidentiality, privacy during consultation, provider communication and staff respect. Lower satisfaction was observed for waiting time, waiting-area facilities, availability of health information and involvement in treatment decisions. In multivariable analysis, respectful provider communication, perceived confidentiality, shorter waiting time, adequate explanation of treatment and involvement in clinical decisions were independently associated with higher satisfaction. Conclusion: Client satisfaction with STI services is influenced by both interpersonal and organizational characteristics. Maintaining confidentiality, respectful communication, adequate information, shorter waiting times and client involvement in care may substantially improve the quality and acceptability of STI services. Routine use of client-reported experience measures could help STI clinics identify service gaps and guide quality-improvement interventions.