  We investigate the prospects for detecting violations of Lorentz symmetry in
unpolarized deep inelastic electron-proton scattering in the context of the
future electron-ion collider. Simulated differential cross-section data are
used to place expected bounds on a class of quark-sector coefficients for
Lorentz violation that induce sidereal time dependence in the scattering cross
section. We find that, with $100 \; {\rm fb}^{-1}$ of integrated luminosity,
the expected bounds are in the $10^{-5}-10^{-7}$ range and are roughly two
orders of magnitude stronger than those that can be extracted from existing
HERA data. We also discuss the possibility of extracting bounds on the
remaining time-independent coefficients.
