Pioneer in nuclear chemistry, Nobel.

Reynaldo Hahn de Echenagucia (9 August 1874 – 28 January 1947) was a Venezuelan-born French composer, conductor, music critic, and singer.

William Hahn (born Carl Wilhelm Hahn; 7 January 1829 – 8 June 1887), was a German painter active in the United States known for his genre paintings of California.

(born 1940) an American photographer known for working in alternative and early photographic processes.

Emanuel Otto Hahn (30 May 1881 – 14 February 1957) was a German-born Canadian sculptor and coin designer.

German physicist, discovered nuclear fission.

David Charles Hahn (October 30, 1976 – September 27, 2016), sometimes called the "Radioactive Boy Scout" and the "Nuclear Boy Scout" was an American nuclear radiation enthusiast who built a homemade neutron source at the age of seventeen.

Gustav Hahn (27 July 1866 – 1 December 1962) was a German Canadian painter, muralist and interior decorator who pioneered the Art Nouveau style in Canada.