The 3rd International Workshop of User-Oriented Logic Paradigms (IULP) focuses on discussing different aspects involved in making logic paradigms more user-friendly/oriented, where the "user" could be either an expert of the paradigm, or a non-expert who simply uses tools developed for the paradigm in some application. IULP aims to bring together researchers working on different logic paradigms, such as answer set programming, constraint logic programming, probabilistic logic programming, abductive logic programming, inductive logic programming, argumentation, principles of teaching etc., as user-friendliness is an important topic in all of these areas.