QCD jet physics with the CMS detector at the LHC

We present QCD studies with jets collected by the CMS experiment at the Large Hadron Collider (LHC) at 7 TeV center of mass energy, including inclusive jet and dijet cross section measurements, the dijet polar and azimuthal angular distributions, and jet and event shapes. The data are compared to QCD predictions at NLO and NNLO and we show the sensitivity to physics processes beyond the Standard Model.