This lecture overviews Ηuman Body Posture and Pose Estimation that has many applications in Human-centered Computing, Image and Video Analysis and Social Media Analytics. It covers the following topics in detail: Human body models: 2D Skeletons, 3D Skeletons, MPEG-4 models. 2D human body posture estimation. 3D human body posture estimation. 2D Human body pose estimation. 3D Human body pose estimation. Facial Pose Estimation.