  We present a determination of the strange quark mass using lattice QCD.
Particular focus is put on the definition and renormalization of the mass. The
latter is done non-perturbatively, using a recursive finite-size scaling
technique. The hadronic regime of QCD, where the kaon mass is used as input of
the calculation, is connected with the perturbative regime, where the strange
quark mass can be translated into the MSbar scheme. A summary plot of the
present lattice computations using dynamical (sea) quarks is included.
