Friedrich Nietzsche is considered one of the most brilliant thinkers in the history of philosophy, although a number of myths have grown up about the character, also surrounded by many controversies. His works and thoughts have provided inspiration for humanists with a wide spectrum of most different interests. Nietzsche did not want to be regarded as a philosopher, but he has been living in the contemporary consciousness as a thinker nonetheless. According to the extraordinary style of Nietzsche’s works, however, he also is considered a poet, one of the most distinctive stylists, even the most virtuoso writer in the history of German. What is more, the stylistic level of Nietzsche’s oeuvre leads to discourses upon its affinity with philosophical or literary studies. The aim of the present article is to review the question mentioned in the title, following the opinions of representative literary figures (such as Heinrich Mann, Thomas Mann, Gottfried Benn, Stanisław Przybyszewski) and philosophers (e.g. Martin Heidegger, Wilhelm Dilthey, Karl Jaspers) as well.