Nahum Tschacbasov (1899–1984; Russian: Нахум Чакбасов, Georgian: ნაუმ ჩაჩბასოვი) also known as Nahum Lichter, was a Russian-born American painter, printmaker, graphic artist, poet, businessperson, and educator. He used many names including Nahum Lichter, Nathan Richter, H. H. Richter, Hanathan Richter, and Nathan Lichterman. Tschacbasov was a member of "The Ten", a group of expressionist artists.