  We report on the calculation of $W^\pm Zjj$ production with leptonic decays
at hadron-hadron colliders at next-to-leading order in QCD. These processes are
important both to test the quartic gauge couplings of the Standard Model and
because they constitute relevant backgrounds to beyond standard model physics
searches. Our results show that the next-to-leading order corrections reduce
significantly the scale uncertainties and have a non-trivial phase space
dependence.
