Yuri Lvovich Nuller (Russian: Ю́рий Льво́вич Ну́ллер) (August 28, 1929 – November 10, 2003, Saint-Petersburg) was a Soviet and Russian psychiatrist and professor. He spent many years investigating the problem of anxiety.Yuri's father, Lev Moiseevich Nuller, a Soviet diplomat in France, was called back from abroad with his family in 1938, arrested and executed by NKVD on July 28, 1941.