Background: patients undergoing cardiac catheterization are reliable to pain that could be changed to emotional, psychological and physical distresses that leave negative effect on the prognosis and outcome of the disease and surgery. Therefore, this study was done to evaluate the effect of foot massage on pain level among patients undergoing cardiac catheterization. Design: a quasi-experimental research design was utilized. Setting: The current study was conducted in cardiac catheterization unit of Menoufia University Hospital. Samplings of 120 patients undergoing cardiac catheterization were assigned randomly into two equal groups, 60 patients for each group: Study group (1): received foot massage therapy. Control group (2): received routine hospital care only. Two instruments were used by the researcher for collecting the necessary data, these tools were: Instrument 1: Structured Interview Patient Assessment Instrument. Instrument 2: a Visual Analogue Pain scale (VAS).Results: Patients in the study group experienced less pain than control group post foot massage. Conclusions: The study concluded that foot massage had a positive effect in reducing pain level among patients underwent cardiac catheterization. Recommendations: The study recommended that foot massage should be part of the overall patient's management and must be routinely carried out.