Jet and dijet cross-section measurements allow for a good test of perturbative QCD (pQCD) in p-p collisions. The ATLAS collaboration performed such doubly differential measurements using a total integrated luminosity of up to 3.2 fb −1 at a centre-of-mass energy of √ s = 13 TeV [4]. Reconstructed jets were formed using the anti−k T algorithm with a distance parameter R = 0.4 [5], and using EM-scale calorimeter clusters as the inputs. The inclusive-jet results cover a wide kinematic range in jet transverse momentum (p T ) from 100 GeV to 3.5 TeV and for several separate ranges of jet rapidity up to |y| = 3.0. In the case of the dijet cross-section measurements, the results are presented as a function of dijet invariant mass (m jj ) in the range 300 GeV < m jj < 9 TeV, and for values of the quantity y * = 1 2 |y 1 − y 2 | -half the absolute rapidity difference between the two leading jets 1 -up to y * = 3.0. The choice of bin sizes (for p T , y, m jj and y * ) was motivated by the respective detector resolution. The measured results from **data** were compared to next-and in some cases next-to-next-to-leading order (NLO and NNLO, respectively) pQCD predictions, and in all cases were found to be in good agreement with the SM predictions. The inclusive-jet and dijet results are summarized in Figure 1, where the usual convention is adopted of applying multiplicative offset factors to the results in various |y| (y * ) bins in order to allow for a better visual comparison of the shapes. Doubly and triply differential jet cross-section measurements were also performed by the CMS collaboration [6,7,8].  Figure 1: Results of the measured (a) jet and (b) dijet differential cross-section results at √ s = 13 TeV by the ATLAS collaboration [4].