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D. N. Sharma
Born	May 21, 1965 Narnaul, Mahendragarh, Haryana (India)
Citizenship	India
Occupation	Radiation oncologist
Organization	All India Institute of Medical Sciences, New Delhi
Known for	Brachytherapy

Daya Nand Sharma (born 21 May 1965) is an Indian oncologist and author known for his contributions in the field of cancer treatment and especially in brachytherapy. He serves as the head of the department and senior consultant oncologist at the All India Institute of Medical Sciences, New Delhi (AIIMS).^[1] He is presently editor-in-chief of the Journal of Cancer Research and Therapeutics.

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Sharma was born in Narnaul, Mahendragarh, Haryana. He graduated in medicine at the Pandit Bhagwat Dayal Sharma Post Graduate Institute of Medical Sciences in 1987. He studied radiation oncology there until 1994. He also obtained a Diplomate of National Board degree in radiation oncology from the National Board of Examinations in 1998.

He joined AIIMS, New Delhi in 2003 and attained the position of professor and head. During his headship of the Department of Radiotherapy, the AIIMS administration issued a letter in November 2022 to abolish the practice of chemotherapy in his department. The letter cites a reason that "doctors of the radiotherapy department are often busy administering chemotherapy, which is also leading to lesser availability of their time for specific radiotherapy treatment." ^[2]

• Dr. Samir Desai Memorial Oration Award 2023^{[citation needed]}
• Fellow of National Academy of Medical Sciences, 2021^[3]
• Dr. G. N. Agarwal Oration at King George's Medical University, 2017^{[citation needed]}
• Fellow of Indian College of Radiation Oncology, 2017^{[citation needed]}
• Visiting Professor Lecture at Loyola University Chicago, 2017^{[citation needed]}
• Indian Council of Medical Research award for biomedical research, 2016^{[citation needed]}
• Visiting Professor Lecture at Rutgers University, 2016^{[citation needed]}
• Recipient of AIIMS Research Excellence Award 2014 (clinical category)^{[citation needed]}
• Awarded UICC Fellowship twice and visited Washington University in St. Louis and Ohio State University in 1999 and 2007^{[citation needed]}