Klaus Neumann was born in 1958 in Hildesheim, Federal Republic of Germany. He has lived in Australia from 1985 to 1986, in 1988, from 1991 to 1999, and from 2001 to 2018, working as a historian at a number of universities. In 2018, he was a professor of history at Deakin University. He is a fellow of the Academy of the Social Sciences in Australia.
In December 2006, he presented a public keynote address as part of the Cultural Studies Association of Australasia annual conference. The address, delivered in the City Walk mall in Canberra on 7 December, was on the topic 'UnAustralian': a version was later published in Continuum (vol. 21, no. 4, pp.475-483).
In 2016, his Across the Seas: Australia’s Response to Refugees: A History won the CHASS Australia Book Prize. In May 2016, he presented on authors Magda Bozic, Vera Wasowski and Robert Hillman, Walter Adamson, Abbas El-Zein, Mariam Issa, and Maria Cicchillitti at the National Library of Australia (podcast available via Soundcloud).