In enzymology, a (R,R)-butanediol dehydrogenase (EC 1.1.1.4) is an enzyme that catalyzes the chemical reaction Thus, the two substrates of this enzyme are (R,R)-butane-2,3-diol and NAD+, whereas its 3 products are (R)-acetoin, NADH, and H+.

This enzyme belongs to the family of oxidoreductases, specifically those acting on the CH-OH group of donor with NAD+ or NADP+ as acceptor.

The systematic name of this enzyme class is (R,R)-butane-2,3-diol:NAD+ oxidoreductase.

This enzyme participates in butanoic acid metabolism.

This EC 1.1.1 enzyme-related article is a stub.