A mechanism for longshore sediment transport outside the surf zone is proposed on the basis of the variation in bottom stress under stationary waves produced by tidal depth changes. The variation in stress is in phase with the longshore component of tidal velocity and is shown to produce a net transport counter to the direction of the advance of the tide along the coast. An analytical model for predicting tidal transport is developed and is applied to measurements of tidal currents and waves near Oceanside, California, over a 3-week period. The tidal transport rate decreases rapidly with depth, and the total net transport is shown to be a very small fraction of that anticipated from wave-driven currents at that location.