Provided is an aluminum alloy slider for a slide fastener, which has both practical strength and plastic workability. A slider for a slide fastener, the slider comprising a slider body (100) and a pull tab attaching post (120) formed on the slider body (100), the slider comprising an aluminum alloy as a base material, the base material containing from 9.6 to 12.0% by mass of Si; and from 1.5 to 3.5% by mass of Cu; the balance being Al and inevitable impurities, the inevitable impurities having a Pb concentration of 0.01% by mass or less.
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