Sergiu Dan (Romanian pronunciation: [ˈserd͡ʒju dan]; born Isidor Rotman or Rottman; December 29, 1903 – March 13, 1976) was a Romanian novelist, journalist, Holocaust survivor and political prisoner of the communist regime. Dan, the friend and collaborator of Romulus Dianu, was noted during the interwar period as a contributor to Romania's avant-garde and modernist scene, collaborating with poet Ion Vinea on Contimporanul review and newspaper. He was also affiliated with the rival literary club, Sburătorul, and noted for criticizing the communist sympathies of other avant-garde writers. His main works of the 1930s include contributions to the psychological novel, thriller and political novel genres, received with critical acclaim.