Background and Objectives: Hyperglycaemia is common among patients with acute myocardial infarction (AMI) and is associated with high risk of mortality and morbidity. However, the relationship between admission plasma glucose (APG) levels and mortality in diabetic and non diabetic patients with AMI need further investigation. This study aims at exploring the association between APG and hospital stay mortality in non diabetic patients presenting with AMI. Methods: The study was conducted over the period of 24 months on 300 non diabetic patients presenting with AMI admitted in ICCU at Al–Ameen Medical College Hospital, Bijapur. The cases were divided into group I to IV based on admission plasma glucose levels. There were 90 patients in group I (admission RBS < 120mg %), 50 patients in group II (admission RBS 120– 139mg %), 100 patients in group III (admission RBS 140– 167mg %) and 60 patients in group IV (admission RBS > 167mg %). All cases were subjected to investigations, and in–hospital complications were noted. Each patient was then followed up till discharge from hospital. In hospital complications and hospital stay mortality was analyzed using appropriate statistical methods across the groups (I– IV). Results: Of the 300 cases, all had ST segment elevation myocardial infarction. Age and sex were comparable between the groups. Patients with admission plasma glucose levels >167mg% (Groups IV) were found to have lower systolic blood pressure (P= 0.002), diastolic blood pressure (P=<0.001) and lower left ventricular ejection fraction (LVEF) on admission and had greater chances of development of cardiogenic shock (P=0.01). The incidence of hospital stay mortality was more in group IV (P=0.01). Conclusion: In our study in–hospital complications were more common in subjects with high admission plasma glucose levels. There was a positive linear correlation between admission plasma glucose levels and hospital stay mortality.