Abstract: Objectives: this study aimed to assess cardiac catheterization patients satisfaction towards health care services and to find out the relationship between patients satisfaction and their demographic and clinical data. Methodology:Descriptive analyticdesign was adopted in the current study in order to assess cardiac catheterization patients satisfaction towards health care services. A non-probability (Purposive sample) of (150) patients who were completed cardiac catheterization procedure.Data collected through using of a well-designed questionnaire consist of two main parts, part I consists of demographic and clinical data, part II consists of 60 items about health care services.