  This article presents prospects for Lorentz-violation searches with
$t\bar{t}$ at the LHC and future colliders. After a short presentation of the
Standard-Model Extension as a Lorentz-symmetry-breaking effective field theory,
we will focus on $t\bar{t}$ production. We study the impact of Lorentz
violation as a function of center-of-mass energy and evaluate the sensitivity
of collider experiments to this signal.
