To provide a water-based matte coating agent giving furniture and sheet or leather for interior material for vehicle having properties such as blackness, chemical resistance and light resistance comparable or superior to those of an organic solvent-type coating agent by using a water-based coating agent free from environmental pollution.

The water-based matte coating agent is produced by compounding 100 pts.wt. (solid basis) of a water-based polyurethane resin with 50-300 pts.wt. of truly spherical fine particles having an average particle diameter of 0.1-3.0μm and made of at least one kind of crosslinked organic resin selected from an acrylic resin, a urethane resin, a urea resin, a silicone resin, an epoxy resin, a melamine resin, a polypropylene resin, a polyethylene resin, a nylon resin and a fluororesin.

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