D-arabinitol dehydrogenase (NADP<sup>+</sup>) (, NADP<sup>+</sup>-dependent D-arabitol dehydrogenase, ARD1p, D-arabitol dehydrogenase 1) is an enzyme with systematic name D-arabinitol:NADP<sup>+</sup> oxidoreductase. This enzyme catalyses the following chemical reactions:
The enzyme present in the fungus Uromyces fabae can make use D-arabinitol and D-mannitol in the forward direction, and D-xylulose, D-ribulose and D-fructose in the reverse direction.