The top quark forward-backward asymmetry measured at the Tevatron collider shows a large deviation from standard model expectations. Among possible interpretations, a non-universal Z^' model is of particular interest as it naturally predicts a top quark in the forward region of large rapidity. To reproduce the size of the asymmetry, the couplings of the Z^' to standard model quarks must be large, inevitably leading to copious production of same-sign top quark pairs at the energies of the Large

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... adron Collider (LHC). We explore the discovery potential for tt and ttj production in early LHC experiments at 7-8 TeV and conclude that if no tt signal is observed with 1 fb^-1 of integrated luminosity, then a non-universal Z^' alone cannot explain the Tevatron forward-backward asymmetry.