Introduction: Metabolic syndrome is a cluster of metabolic disorders associated with cardiovascular disease. Animal and human experimental studies have shown the beneficial effects of sesame oil on the components of the metabolic syndrome however, the effect of Ardeh (grounded sesame seed) is unclear. The aim of this study was to determine effect of Ardeh on components of the metabolic syndrome in type 2 diabetic patients. Materials and Methods: In this clinical trial, 40 type 2 diabetic patients were recruited and randomly assigned into two groups, the control and Ardeh consumers. The breakfast energy content of participants, was planned at around 270 kcal. In the Ardeh consumer group, part of their breakfast was replaced by 2 Tsp Ardeh, whereas controls consumed the usual breakfast. Waist circumference, systolic and diastolic blood pressure, serum concentrations of glucose, triglycerides and HDL-C were measured at baseline and again 6 weeks after intervention. Results: In the Ardeh consumer group after six weeks mean serum triglyceride concentration decreased significantly (144±9.8 vs. 175±11.4 mg/dL) (P<0.05) and HDL-C increased (51.7±1.7 vs. 11.5 mg/dL), compared with controls. Means of other components of metabolic syndrome showed no significant changes between Ardeh consumer and control groups. Conclusions: Our results suggest that consumption of 28 g/d Ardeh has a beneficial effect on some components of metabolic syndrome, findings that need to be confirmed by further investigations.