Glucose levels tend to rise postprandially in patients with type 2 diabetes. Flaxseeds are known to have glycaemic control-improving properties and are rich in dietary fibre, alpha-linolenic acid which is an omega-3 fatty acid and phenolic compounds such as phenolic acids, lignans, flavonoids and tocopherols. Therefore, this randomised cross-over clinical trial evaluated the effects of ground raw golden flaxseeds on postprandial glycaemia induced by the consumption of complex carbohydrates in Type 2 diabetic patients. To assess the 2-hour postprandial glycaemic curve, 19 male Type 2 diabetics were randomly assigned either to consume 15 grams of ground raw gold flaxseeds 15 minutes before eating a standardised balanced breakfast or to consume a standardised balanced breakfast without ground flaxseeds. Compared to men who did not consume ground flaxseeds before their breakfast meal, those who ate 15 grams of ground flaxseed were able to lower their postprandial glucose levels by 24% and reduce their peak glucose levels by 17%. In order to generalise the results for the general population, further robust long-term studies are required to examine the beneficial effects of flaxseed on postprandial glycaemic excursions. This study can, however, assist healthcare professionals in implementing dietary strategies that include flaxseed to manage postprandial blood sugar levels in patients with type 2 diabetes.