In enzymology, 3-hydroxybenzyl-alcohol dehydrogenase () is an enzyme that catalyzes the chemical reaction
The two substrates of this enzyme are 3-hydroxybenzyl alcohol and oxidised nicotinamide adenine dinucleotide phosphate (NADP<sup>+</sup>). Its products are 3-hydroxybenzaldehyde, 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 3-hydroxybenzyl-alcohol:NADP<sup>+</sup> oxidoreductase. Other names in common use include m-hydroxybenzyl alcohol dehydrogenase, m-hydroxybenzyl alcohol (NADP<sup>+</sup>) dehydrogenase, and m-hydroxybenzylalcohol dehydrogenase. This enzyme participates in toluene and xylene degradation.