The lecture is an introduction to the fundamentals and engineering applications of the dynamics of rigid bodies. The content of the module is limited to rigid bodies that can be coupled by means of springs, dampers, and friction elements. In detail, central concepts - such as kinematics, velocity, acceleration, kinetics, momentum theorem, angular momentum theorem - are introduced using a mass point in three-dimensional space. Subsequently, these concepts are extended and applied to spatial systems of mass points and the three-dimensional rigid bodies. This is followed by a short introduction to the principles of mechanics, in particular to derive the Lagrangian equations of the 2nd kind. In addition to setting up the equations of motion, their solutions are treated, which include free and forced oscillations. Finally, relative motion is treated using the mass point as an example. The module is the basis for numerous other modules in the compulsory and elective area.