Recent QCD results from ATLAS

The ATLAS collaboration has performed studies of a wide range of QCD phenomena, from soft particle to hard photon and jet production. Recent soft-QCD measurements include studies of the underlying event properties, polarisation of Lambda particles and Bose-Einstein correlations. The measurement of diffractive di-jet production with a large rapidity gap devoid of hadronic activity tests the interplay of soft and hard phenomena. Differential measurements of inclusive, di-jet, tri-jet and multi-jet production provide stringent tests of high-order QCD predictions and provide input for determination of parton density functions and the strong coupling constant. Precision measurements of the isolated high pT inclusive photon cross section test the theoretical predictions and constrain parton density functions. An overview of these results is given.