Introduction: Hypertension is a common co-morbidity in diabetes mellitus (DM) that may lead to serious complications if not adequately controlled. Method: This is a descriptive study based on data from the Audit of Diabetes Control and Management (ADCM) registry. This audit assessed the treatment and standard of control of hypertension in diabetic patients aged 18 years and above. Data were analysed using STATA version 9. Results: From a total of 20 646 cases, about two third of them, 13 417 (65%) were reported to have hypertension. 19 484 (94.4%) had their blood pressure (BP) recorded and out of these, 11 414 (58.5%) were found to have BP >130/80 mmHg. 13 601 cases (65.9%) of the total sample were on antihypertensive drugs. 64.1% of those on antihypertensive drugs were prescribed angiotensin-converting enzyme inhibitors (ACEI) or angiotensin II receptor blockers. 14.2% were on more than two types of antihypertensive drugs. Older patients and those with longer duration of DM were less likely to achieve the target BP of ≤130/80. In general, about 40% of diabetic cases registered in the ADCM project had their hypertension well controlled.