Multiple choice general knowledge Whose Birthday is celebrated as Engineer's Day ? Sir M Visweswaraiah C V Raman APJ Abdul kalam JRD Tata Reveal answer Fill a bubble to check yourself A Correct answer Explanation Engineer's Day is celebrated on September 15th to mark the birth anniversary of Sir M Visweswaraiah, one of India's greatest engineers. The day specifically honors engineers, not scientists - C V Raman was a physicist and Nobel laureate.