Forward and Low-x Physics in the CMS Experiment

Forward physics measurements with the Compact Muon Solenoid (CMS) experiment, one of the two large multi-purpose experiments at the Large Hadron Collider (LHC) at CERN, cover a wide range of physics subjects. HF and CASTOR, the forward calorimeters of the CMS, are used to collect the data up to pseudo-rapidity of 6.6. Both detectors provide sensitivity to a large part of the total inelastic cross section, including diffractive events that produce particles only at forward rapidity, with the exception of very low mass diffraction. In this talk, the results at different center-of-mass energies 7, 8 and 13 TeV are presented.