Background: Coronary artery disease and its acute presentation are being increasingly recognised and treated in sub-Saharan Africa. It is just over a decade since the introduction of interventional cardiology for coronary artery disease in Kenya. Local and regional data, and indeed data from sub-Saharan Africa on long-term outcomes of acute coronary syndromes (ACS) are lacking. was carried out to obtain data on patient characteristics, treatment and in-patient outcomes. Patient interviews and a review of clinic records were conducted to determine long-term mortality rates and major adverse cardiovascular events. Results: A total of 230 patients were included in the analysis; 101 had a diagnosis of ST-segment myocardial infarction (STEMI), 93 suffered a non-ST-segment myocardial infarction (NSTEMI), and 36 had unstable angina (UA). The mean age was 60.5 years with 81.7% being male. Delayed presentation (more than six hours after symptom onset) was common, accounting for 66.1% of patients. Coronary angiography was performed in 85.2% of the patients. In-hospital mortality rate was 7.8% [14.9% for STEMI and 2.3% for non-ST-segment ACS (NSTE-ACS, consisting of NSTEMI and UA)], and the mortality rates at 30 days and one year were 7.8 and 13.9%, respectively. Heart failure occurred in 40.4% of STEMI and 16.3% of NSTE-ACS patients. Re-admission rate due to recurrent myocardial infarction, stroke or bleeding at one year was 6.6%. Conclusion: In our series, the in-hospital, 30-day and one-year mortality rates following ACS remain high, particularly for STEMI patients. Delayed presentation to hospital following symptom onset is a major concern.