The article contains an analysis of Witold Gombrowicz’s – one of the famous Polish writer’s of 20th century – patriotism and it’s implementation in his works Trans-Atlantyk and Diaries. The topic of national identity and Polish national features and deficiencies has always been performed in Gombrowicz’s prose and memoirs; it’s particularly interesting for Polish studies in Ukraine because of multiple common features of Ukrainian and Polish nations. There’s also a description of the main directions of national identity and national self-determination problems, the main character’s collisions in Gombrowicz’s novel Trans-Atlantyk, general overview of Polish national ideas’ performance in all of his heritage, in particular, perception of Polish national cultural values and the notion of «Synczynza», which Gombrowicz has provided in his novel Trans-Atlantyk. The article is also supplemented by a projection of writer’s allega