Thepaperaimstoexplorethepotentialofresearchbydesigninarchi- tecture and visual arts. The main objective of the paper is to analyze the different models and epistemological positions advanced in the academic milieus as far as doctoral research by design is concerned, to explore the differences and similar- ities between research by design in the field of architecture and in the field of visual arts. Even though the research by design in the fields of architecture and visual arts is focused on the production of knowledge through visual, associative, (...) and experimental research, the models of research by design in visual arts differ from those prevailing in architectural programs. The paper focuses on a corpus of models of doctoral research by design carried out within different university pro- grams in schools of architecture and visual arts, and various multi-university and supra-disciplinary programs (architecture and visual arts) which share the inten- tion to develop their research projects through creative practice. Two questions to which this paper aims to respond are the following: Under which circumstances and conditions a work in the field of architecture (drawn, graphic, or con-structed) or its formulation (verbal or written) can be recognized as active in the constitution of knowledge? What are the modes of inquiry specific to architectural and artistic practices that make it possible to build knowledge that can be transmitted and shared? (shrink)