Narendra Dhar Jayal (Nandu Jayal) (25 June 1927 – 28 April 1958) was an Indian mountaineer and an officer of the Bengal Sappers and the Indian Army Corps of Engineers. He is credited with pioneering and patronizing early post-Independence mountaineering in India, and was the founder principal of the Himalayan Mountaineering Institute. He encouraged the youth of India to take up mountaineering, and has been called the "Marco Polo of Indian Mountaineering".