Arvindar Singh is a versatile columnist and entrepreneur. His notable works include "Myths and Realities of Security and Public Affairs" (an anthology) and "What A Life! A Kaleidoscope of Rajinder Puri’s Cartoons" (co-authored with Partha Chatterjee). Singh regularly contributes book reviews for Penguin Random House Publishers. He is known for his writings on security matters and authored a monograph on Field Marshal S.H.F.J Manekshaw for the United Services Institution of India, New Delhi, in 2003. Associated with Bharatiya Vidya Bhavan, he frequently addresses current topics of national interest as a freelancer.