Mixing and CP Violation at the Tevatron

Measurements of meson mixing and CP violation parameters obtained by the CDF and D0 experiments at the Fermilab Tevatron are presented. These include results on $B_s$ and $D$ meson mixing, and searches for CP violation in the decay $B^+ \to J/\psi K^+$, in mixing through semileptonic $B_s$ meson decays, and in the interference between mixing and decay in the process $B_s \to J/\psi \phi$.