In enzymology, a glycerol 2-dehydrogenase (NADP<sup>+</sup>) () is an enzyme that catalyzes the chemical reaction
The two substrates of this enzyme are glycerol and oxidised nicotinamide adenine dinucleotide phosphate (NADP<sup>+</sup>). Its products are glycerone, reduced NADPH, and a proton.
This enzyme belongs to the family of oxidoreductases, specifically those acting on the CH-OH group of donor with NAD<sup>+</sup> or NADP<sup>+</sup> as acceptor. The systematic name of this enzyme class is glycerol:NADP<sup>+</sup> 2-oxidoreductase (glycerone-forming). Other names in common use include dihydroxyacetone reductase, dihydroxyacetone (reduced nicotinamide adenine dinucleotide, phosphate) reductase, dihydroxyacetone reductase (NADPH), DHA oxidoreductase, and glycerol 2-dehydrogenase (NADP<sup>+</sup>). This enzyme participates in glycerolipid metabolism.