This book constitutes the refereed proceedings of the 4th International Conference on Articulated Motion and Deformable Objects, AMDO 2006, held in Port d'Andratx, Mallorca, Spain, in July 2006. The 53 revised full papers presented were carefully reviewed and selected from 81 submissions. Among the topics addressed are geometric and physical deformable models, motion analysis, articulated models and animation, modelling and visualisation of deformable models, deformable models applications, motion analysis applications, single or multiple human motion analysis and synthesis, face modelling, tracking, recovering and recognition models, virtual and augmented reality, haptics devices, and biometrics techniques