Seasonal variation in admissions and mortality due to acute myocardial infarction has been observed in different countries, this study carries out to determine the existence of seasonal rhythms and some epidemiological variable in hospital admissions for acute myocardial infarction. This is a Retrospective study of (588) patients record with acute Myocardial infarction admitted to the coronary care unit in Baqubah Teaching Hospital, for the period from 1st January 2014 to 31st December 2015. Data are collected from the case records according to special designed questionnaire form (Appendix) and inter in computer, the data of patients are analyzed through gathering the data of climate temperature, resting electrocardiogram and prior history of cardiac disease and coronary risk factors. The total Number of cases are (588) of acute myocardial infarction, most of admission occur in Jan 74 (12.5 %), most common affected gender is male 434 (73.80 %), most commonly affected aged group was between (51 - 60) years 187 (31.8%), retired was the frequent occupation among the patients with AMI 183 (31.21%), smoking is most probably affected risk factor (46.25%) and mortality was 121 (20.5%) mostly in March and February. It is concluded there is a seasonal distribution in admissions for acute myocardial infarction, with an increase in winter and a decrease in summer, and patients aged (50 - 60) years are more affected age group.