Ion Ţuculescu (Romanian pronunciation: [iˈon t͡sukuˈlesku]; 19 May 1910 – 27 July 1962) was a Romanian expressionist and abstract oil painter, although professionally he worked as a biologist and physician. His artwork became well-known posthumously, when, in the spring of 1965, a major retrospective exhibition revealed him as one of the important post-World War II European modern artists.