  I discuss how masses and widths of hadron resonances are extracted from
lattice QCD. Recent lattice results on the light, strange and charm meson
resonances are reviewed. Their properties are revealed by simulating the
corresponding scattering channels pi-pi, K-pi and D-pi on the lattice and
extracting the scattering phase shifts. In particular we address the resonances
rho, D0*(2400), D1(2430), K*, kappa and K0*(1430).
