  The Higgs boson mass used to be the only unknown input parameter of the
electroweak contributions to (g-2)_\mu\ in the Standard Model. It enters at the
two-loop level in diagrams with e.g. top loops, W- or Z-exchange. We
re-evaluate these contributions, providing analytic expressions and exact
numerical results for the Higgs boson mass recently measured at the LHC. Our
final result for the full Standard Model electroweak contributions is
(153.6\pm1.0)*10^{-11}, where the remaining theory error comes from unknown
three-loop contributions and hadronic uncertainties.
