We calculate the lowest order QCD corrections to single lepton inclusive distribution in the process hadron‐hadron → Z0, &ggr; or W± → l±anything. Numerical analysis for p¯p collisions at &sqrt;s+540 GeV shows the QCD processes to be the dominating production mechanism at kT≳M/2 and to give a very important correction to the parton model result at and below kT=M/2.