Recent analyses by the CDF and D0 Collaborations of jet data produced in p{bar p} collisions at the Fermilab Tevatron Collider are presented. These include new studies of the inclusive jet production cross section, a measurement of the strong coupling constant, the first measurement of subjet multiplicity of quark and gluon jets, examination of ratios of multijet cross sections and their implications for choice of renormalization scale, and a study of charged jet evolution and energy flow in the underlying event. The results are compared to theoretical predictions.

The strong coupling constant alpha_S is measured in proton-proton collisions at a centre-of-mass energy of 7 TeV using 38 pb -1 of data recorded by the ATLAS detector. An inclusive jet production ratio distribution is used to reduce parton distribution functions dependence and measure the coupling strength at energy scales between 100 GeV and 1.5 TeV. The value of the strong coupling constant alpha_S(MZ) is measured to be 0.111 +0.016_-0.012, in agreement with similar measurements performed at hadron colliders and the world average value. Results are also consistent with the running of the coupling as predicted by Quantum Chromodynamics, tested for the first time at energy scales greater than 209 GeV.

The CDF and D0 Collaborations have measured the inclusive jet cross section using 1992--93 collider data at (square root)s = 1,800 GeV. The D0 measurement is higher than NLO QCD predictions, though within systematic uncertainties. The CDF measurement is in very good agreement with NLO QCD predictions for transverse energies (E{sub T}) below 200 GeV. However it is systemically higher than NLO QCD predictions for E{sub T} above 200 GeV. The CDF measurement of two-jet mass and total transverse energy spectra also show a similar excess above QCD predictions at higher E{sub T}.

The D0 and CDF proton-antiproton collider experiments at the Tevatron accumulated large samples of high energy jet production data during Run I (1992- 1996). Presented here are measurements of the central inclusive jet cross section at center-of-mass energies of 1800 and 630 GeV (by the D0 and CDF experiments) and a forward).