David Liu is a rhinologist and anterior skull base surgeon at the Department of Otorhinolaryngology, Head and Neck Surgery, Medical University of Vienna. He completed his residency training in Vienna and a fellowship in Rhinology and Skull Base Surgery at Stanford University, where he subsequently served as Clinical Instructor. His clinical and academic work focuses on chronic rhinosinusitis, olfactory disorders, endoscopic sinus surgery, and anterior skull base surgery. He serves on the Executive Committee of the European Rhinologic Society.