In this thesis, we studied the life and work of the Venetian cartographer Pietro Coppo using many historical sources. We devoted one chapter to the description of the political, cultural and social situation in Istria in the past, in order to contextualize Coppo's work and evaluate it more accurately. The core of the thesis was the analysis of all preserved Coppo’s documents, with special emphasis on his maps of the Istrian peninsula, which we compared with other best-known maps of the Istrian peninsula from the 16th and 17th centuries. We payed special attention to the Piran Codex, primarily because of its uniqueness, historical significance and the value it has for the world's scientific heritage. In the end, we also presented cartographers and geographers directly influenced by Coppo, as well as researchers who several centuries later investigated his documents and rediscovered this great and influential cartographer.