Lecture Notes in International Trade Theory covers classical international trade models (including the Ricardian, Ricardo Viner, and Heckscher-Ohlin-Samuelson models). The course is designed for M.Sc. and first year PhD students. It relies on both graphical and analytic methods, requiring only intermediate microeconomics and a solid grounding in calculus. The material emphasizes 'second-best' settings, where markets are imperfect. The goal is to equip students with a good enough understanding of open-economy general equilibrium relations that they understand how distortions ripple across...