A seat slide apparatus for a vehicle includes a tower rail, an upper rail, a memory base arranged above a bottom wall portion of the lower rail, a restriction piece holding the memory base so that the memory base is restricted from moving, a memory pin attached to the memory base in a manner that advance and retract of the memory pin relative to the memory base is allowed, the memory pin engages with the lower rail in a protruding state, the memory pin disengages in a retracted state, an interlocking mechanism pushing a lock member and the memory pin in a forward-folded state of a seatback, and a holding member holding the protruding state of the memory pin and allowing the memory base to move.