text: During his lifetime Hahn was awarded orders, medals, scientific prizes, and fellowships of Academies, Societies, and Institutions from all over the world. At the end of 1999, the German news magazine Focus published an inquiry of 500 leading natural scientists, engineers, and physicians about the most important scientists of the 20th century. In this poll Hahn was elected third (with 81 points), after the theoretical physicists Albert Einstein and Max Planck, and thus the most significant chemist of his time.
  As well as the Nobel Prize in Chemistry (1944), Hahn was awarded:
  * the Emil Fischer Medal of the Society of German Chemists (1922), 
  * the Cannizaro Prize of the Royal Academy of Science in Rome (1938), 
  * the Copernicus Prize of the University of Konigsberg (1941), 
  * the Gothenius Medal of the Akademie der Naturforscher (1943), 
  * the Max Planck Medal of the German Physical Society, with Lise Meitner (1949), 
  * the Goethe Medal of the city of Frankfurt-on-the-Main (1949),
  * the Golden Paracelsus Medal of the Swiss Chemical Society (1953), 
  * the Faraday Lectureship Prize with Medal from the Royal Society of Chemistry (1956),
  * the Grotius Medal of the Hugo Grotius Foundation (1956),
  * Wilhelm Exner Medal of the Austrian Industry Association (1958),
  * the Helmholtz Medal of the Berlin-Brandenburg Academy of Sciences and Humanities (1959),
  * and the Harnack medal in Gold from the Max Planck Society (1959).
  Hahn became the honorary president of the Max Planck Society in 1962.
  * He was elected a Foreign Member of the Royal Society (1957).
  *His honorary memberships of foreign academies and scientific societies included:
  ** the Romanian Physical Society in Bucharest, 
  ** the Royal Spanish Society for Chemistry and Physics and the Spanish National Research Council, 
  ** and the Academies in Allahabad, Bangalore, Berlin, Boston, Bucharest, Copenhagen, Göttingen, Halle, Helsinki, Lisbon, Madrid, Mainz, Munich, Rome, Stockholm, Vatican, and Vienna.
  He was an honorary fellow of University College London,
  * and an honorary citizen of the cities of Frankfurt am Main and Göttingen in 1959, 
  * and of Berlin (1968).
  * Hahn was made an Officer of the Ordre National de la Légion dHonneur' of France (1959),
  * and was awarded the Grand Cross First Class of the Order of Merit of the Federal Republic of Germany (1959).
  * In 1966, US President Lyndon B. Johnson and the United States Atomic Energy Commission (AEC) awarded Hahn, Lise Meitner and Fritz Strassmann the Enrico Fermi Award. The diploma for Hahn bore the words: "For pioneering research in the naturally occurring radioactivities and extensive experimental studies culminating in the discovery of fission."
  * He received honorary doctorates from
  ** the University of Gottingen,
  ** the Technische Universität Darmstadt, 
  ** the University of Frankfurt in 1949, 
  ** and the University of Cambridge in 1957.
  Objects named after Hahn include: 
  * NS Otto Hahn, the only European nuclear-powered civilian ship (1964),
  * a crater on the Moon (shared with his namesake Friedrich von Hahn),
  * and the asteroid 19126 Ottohahn,
  * the Otto Hahn Prize of both the German Chemical and Physical Societies and the city of Frankfurt/Main,
  * the Otto Hahn Medal and the Otto Hahn Award of the Max Planck Society,
  * and the Otto Hahn Peace Medal in Gold of the United Nations Association of Germany (DGVN) in Berlin (1988).
  Proposals were made at various times, first in 1971 by American chemists, that the newly synthesised element 105 should be named hahnium in Hahns honour, but in 1997 the IUPAC named it dubnium, after the Russian research centre in Dubna. In 1992 element 108 was discovered by a German research team, and they proposed the name hassium (after Hesse). In spite of the long-standing convention to give the discoverer the right to suggest a name, a 1994 IUPAC committee recommended that it be named hahnium'. After protests from the German discoverers, the name hassium (Hs) was adopted internationally in 1997.