  In this talk I review some recent results from lattice QCD calculations which
aim to a more accurate determination of the Standard Model parameters in the
quark sector. After a review of our current knowledge of these parameters, I
present lattice results for the strange, charm and bottom quark masses, the CKM
matrix element $V_{ub}$ and the complex CKM phase $\delta$, which induces CP
violation effects in the Standard Model with three generations.
