The Department of Atomic Energy (DAE) (IAST: Paramāṇu Ūrjā Vibhāga) is an Indian government department with headquarters in Mumbai, Maharashtra, India.

[3] DAE was established in 1954 with Jawaharlal Nehru as its first minister and Homi Bhabha as its secretary.

[4] DAE has been engaged in the development of nuclear power technology, applications of radiation technologies in the fields of agriculture, medicine, industry and basic research.

It has under its aegis two boards for promoting and funding extramural research in nuclear and allied fields, mathematics and a national institute (deemed university).

It also supports eight institutes of international repute engaged in research in basic sciences, astronomy, astrophysics, cancer research and education.