Collisionless shocks (CSs) are ubiquitous in space physics and astrophysics settings. They are important for converting dynamic pressure of a supersonic flow into thermal energy and affect the distributions of particles and field. Of special interest are the processes of ion isotropization behind CSs. On the other hand, Voyager measurements in the weakly collisional interstellar medium revealed puzzling dissipative shock structures that require a thorough analysis, particularly with respect to their ability to reflect electrons and generate plasma waves as efficiently as CSs. We invite observational, theoretical, and numerical studies related to the following topics: (1) the role of nonthermal ions, collisions, and turbulence in the shock structure; (2) ion heating and acceleration due to ion reflection and backstreaming; (3) upstream-to-downstream connection of the bulk and kinetic properties across shock waves, and (4) plasma waves and radio emission in broad, dynamic foreshock regions in the heliosphere and beyond it.