Electroweak results from ATLAS

Measurements of single W and Z as well as diboson WW , WZ and ZZ production at the LHC performed by the ATLAS collaboration in 2010 and 2011 are presented. The data provide accurate tests of the theory in a wide kinematic range. A QCD analysis of the W and Z boson differential distributions reveals a novel sensitivity to the strange-quark density which is found to be large compared to previous expectations. Studies of W+b and Z+b jet production and W polarisation test NLO QCD calculations and proton PDFs. The diboson cross- section measurements are used to determine limits on the anomalous couplings. No deviation from the standard model is observed.