Biren K. Chamola, B.Sc. (Mathematics, Statistics and Physics), M.A., Mathematics, Garhwal University, B.Ed., has been at Doon since 1999. He has a varied teaching experience in India, Indonesia and Singapore. He has taught Mathematics at ISC, IGCSE, A-Level and IB level. He is a keen player of squash, tennis and chess. His other interests include reading, traveling and trekking.

Anjan Chaudhary, B.Sc. (Hons), Mathematics, Calcutta University, M.Sc., Applied Mathematics, Calcutta University, has taught at Doon since 2004. Before he came to Doon, he taught at the Scindia School, Gwalior. His interests include reading, soccer, cricket, and photography.

Pankaj Joshi, B.Sc., M.Sc., Mathematics, Kumaon University, has taught at Doon since 1999. Before he came to Doon, he taught at the Army Public School, Noida. He has also had a short stint with Modi Korea Telecom. His interests include soccer, hockey, chess, photography, and road running. An avid and qualified mountaineer, he has accompanied the Doon School boys in expeditions to peaks above 20,000 feet in the Garhwal Himalayas.

Mona Khanna, B.Sc. (Hons.), Mathematics, M.Sc., Mathematics, Ph.D., Mathematics, University of Delhi, B.Ed., has taught at the Doon since 2007. Before she came to Doon, she taught at Step by Step World School, Jaipur, and Lakshmipat Singhania School, New Delhi. Her interests include reading and traveling.

Rahul Luther, B.Sc., M.Sc., Mathematics, Garhwal University, M.Ed., has taught in Doon since 2008. Before he came to Doon, he taught at Moravian Institute School, Dehradun for 3 years and at St.Thomas College, Dehradun for 16 years. His interest includes cricket, badminton, reading and comparative worldviews.

Manu Mehrotra, B.Sc. (Hons.), Mathematics, M.Sc., Mathematics, Delhi University, M.A., Mathematics Education, University of Michigan (Ann Arbor), has taught at Doon since 2001.  From 2006 to 2009 he was in the University of Michigan. He rejoined the school in 2009. His interests include movies, music, mountaineering, travelling, photography, and road running. He participated in and finished two half-marathons. He has also accompanied the Doon School boys in expeditions to peaks above 20,000 feet in the Garhwal Himalayas.

Sudhir Thapa, B.Sc., M.A., Mathematics, Garhwal University, B.Ed. has taught at Doon since 2008. Before he came to Doon, he taught at Welham Girls' School, Dehra Dun for twelve years and was the head of Mathematics Department there for 9 years. His interests include cricket and trekking.