We provide evidence for partial deconfinement -- the deconfinement of a SU(\(M\)) subgroup of the SU(\(N\)) gauge group -- by using lattice Monte Carlo simulations. We take matrix models as concrete examples. By appropriately fixing the gauge, we observe that the \(M\times M\) submatrices deconfine. This gives direct evidence for partial deconfinement at strong coupling. We discuss the applications to QCD and holography.