This chapter provides an overview of the stability behaviour of thin-walled layered beams, distinguishing between global and local stability. For the case of a beam under combined loads, all necessary equations for the global stability behaviour are provided and a distinction is made between global cases such as column buckling, torsional buckling, flexural-torsional buckling and lateral stability. For some selected cases, exact analytical solutions can be given, whereas for non-elementary solvable cases, approximation methods such as the Ritz method or the Finite Element Method will be used, both of which are discussed. Regarding the local stability of thin-walled layered beams, an analytical approach based on plate analysis and using appropriate equivalent restraint stiffnesses is discussed.