Heinz Oberhummer was born in Bischofshofen and grew up in Obertauern, Austria. He studied physics at the University of Graz and the Ludwig Maximilian University of Munich. He lived in the village of Oberwölbling in the Dunkelsteinerwald, Lower Austria. Heinz Oberhummer was married and had two children.
Heinz Oberhummer was professor emeritus of Theoretical Physics at the Atominstitut of the Vienna University of Technology. His main research area was nucleosynthesis. He was also involved in questions concerning the fine-tuning of the Universe. Oberhummer, Csótó und Schlattl were able to derive quantifiable results concerning the fine-tuning of the Universe by investigating the creation of carbon and oxygen in the triple-alpha process in red giants. 
He was the initiator of "Nuclei in the Cosmos", the most important international conference series in the field of nuclear astrophysics taking place for the tenth time in the year 2008 at Michigan State University in the United States.
He was especially engaged in the popularisation of scientific contents, including the new media. He developed Web-based learning and information systems and co-ordinated educational projects funded by the European Commission, such as Cinema and Science. He was also engaged in the creation and presentation of popular science with the Science Busters in the Rabenhof Theater in Vienna along with Werner Gruber and Martin Puntigam and as a weekly radio column and podcast in the Austrian youth radio station FM4.
He was member of the Scientific Advisory Board of the Giordano Bruno Foundation and the Gesellschaft zur wissenschaftlichen Untersuchung von Parawissenschaften (GWUP), the German-speaking branch of the worldwide skeptical movement. Furthermore, he was president of the "Gesellschaft für Kritisches Denken" (the Austrian branch of the GWUP), and of the Austrian "Zentralrat für Konfessionsfreie" (National Council of Non-confessionals. Heinz Oberhummer was president of the secularist initiative "Religion ist Privatsache" (Religion is a private matter). He died in Vienna on 23 November 2015.
- David Rennert. "Physiker und "Science Buster" Heinz Oberhummer gestorben". derStandard.at.
- Oberhummer, H.; A. Csótó; H. Schlattl (2000-07-07). "Stellar production rates of carbon and its abundance in the Universe". Science. 289 (5476): 88–90. arXiv:astro-ph/0007178. Bibcode:2000Sci...289...88O. doi:10.1126/science.289.5476.88. PMID 10884230. Retrieved 2008-02-26.
- "Nuclei in the Cosmos - An International Conference Series in Nuclear Astrophysics". Retrieved 2008-02-26.
- "Cinema and Science". Retrieved 2008-02-26.
- "Science Busters". Retrieved 2008-02-26.
- Kann das alles Zufall sein - Geheimnisvolles Universum?, Ecowin-Verlag, Salzburg, 2008, ISBN 978-3-902404-54-1
- H. Oberhummer: Urknall und Sternenstaub - Der Kosmos aus naturwissenschaftlicher Sicht In Die Idee vom Anfang, Ritter Verlag, Klagenfurt, Wién, 2008, ISBN 978-3-89846-494-9
- H. Oberhummer: Maßarbeit oder Zufall - sind wir nicht anderes als Sternenstaub? In Der etwas andere Blick auf die Schöpfung, HAAG + HERRCHEN, Frankfurt in Main, 2007, ISBN 978-3-89846-494-9
- H. Oberhummer (Editor): Nuclei in the Cosmos, Graduate Texts in Contemporary Physics, Springer Verlag, Heidelberg, 1991, ISBN 0-387-54198-5
- H. Oberhummer, A. Patkos, T. Rauscher: Origin of the Chemical Elements. In: Handbook of Nuclear Chemistry, Vol. 2, Kap. 1, Kluwer, 2003, ISBN 1-4020-1305-1
- H. Oberhummer, A. Csótó, H. Schlattl: Stellar production rates of carbon and its abundance in the Universe, Science 289, 2000, 88
- H. Oberhummer: Kerne und Sterne: Einführung in die Nukleare Astrophysik. In German. Barth, Leipzig, Berlin, Heidelberg 1993, ISBN 3-335-00319-5