OBJECTIVES:  Clinical Pharmacy services at King Saud Medical City (KSMC) were the first founded by Ministry of Health. The aim of this study was to explore workload analysis of clinical pharmacy services at MOH hospital in Saudi Arabia METHODS:  Cross-sectional of a 6-month of providing clinical pharmacy services for adults at KSMC. Ten Clinical Pharmacist and expert trained pharmacist-provided clinical pharmacy services. It is including; drug information services, poisoning control services, therapeutic drug monitoring services, orthopedic services, oncology pharmacy services, pharmacoeconomic services, pain management services. All pharmacists should document the clinical pharmacy activities on a monthly basis; the clinical activities consisted of Central Clinical Pharmacy Activities domain, Patient-Specific Clinical Pharmacy Activities, Administration-Specific Clinical Pharmacy Activities domain, and some activities and time spent. RESULTS:  The Total full-time employee (FTE) for clinical pharmacy services was (15.752 FTE). The Central Clinical Pharmacy Activities was (4.72 FTE) pharmacist, Patient-Specific Clinical Pharmacy Activities was (4.292 FTE) pharmacist, and the Administration-Specific Clinical Pharmacy Activities was (6.68 FTE) pharmacist. The demand number of the full-time clinical pharmacist (5.75 FTE) pharmacist Of central clinical pharmacy activities, the highest number, was drug information services (1.43 FTE) pharmacist and in-services education (1.03 FTE) pharmacist. Of the patient specific clinical pharmacy activities; the highest number was medication monitoring (0.879 FTE) pharmacist and round medical participation (0.807 FTE) pharmacist. Of administration clinical pharmacy activities; the highest number was policies and procedures design (2.293 FTE) pharmacist and planning of clinical pharmacy services (1.56 FTE) pharmacsit. CONCLUSIONS:  Workload analysis of clinical pharmacy services part of TQM indicators of clinical pharmacy system. Clinical pharmacy services overloaded with a high demand of clinical pharmacist. Administration clinical pharmacy should revise with changing emphasis to patient-specific clinical pharmacy activities.