Naranjan S. Dhalla, CM OM FRSC (Punjabi: नरंजन धल्ला (Devanagari); born 1936) is a Canadian cardiovascular research scientist focusing on cardiovascular pathophysiology and therapy of heart disease.Dhalla is recognized as a world leader in heart research. His laboratory employs a variety of experimental models to investigate a wide range of cardiovascular diseases at the subcellular and molecular levels.