In enzymology, a geraniol dehydrogenase (EC 1.1.1.183) is an enzyme that catalyzes the chemical reaction

geraniol + NADP⁺ geranial + NADPH + H⁺

Thus, the two substrates of this enzyme are geraniol and NADP⁺, whereas its 3 products are geranial, NADPH, 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 geraniol:NADP⁺ oxidoreductase.

• Potty VH, Bruemmer JH (1970). "Oxidation of geraniol by an enzyme system from orange". Phytochemistry. 9: 1001–1007. doi:10.1016/s0031-9422(00)85218-8.