The Nobel Prize in Chemistry 1944 was awarded to Otto Hahn "for his discovery of the fission of heavy nuclei".
Otto Hahn received his Nobel Prize one year later, in 1945. During the selection process in 1944, the Nobel Committee for Chemistry decided that none of the year's nominations met the criteria as outlined in the will of Alfred Nobel. According to the Nobel Foundation's statutes, the Nobel Prize can in such a case be reserved until the following year, and this statute was then applied. Otto Hahn therefore received his Nobel Prize for 1944 one year later, in 1945.