The three Science of Synthesis volumes on Biocatalysis in Organic Synthesis present a broad contemporary overview on the state-of-the-art in enzymatic methods for asymmetric synthesis suitable for academics and industrial researchers working in the field of organic synthesis. The goal is to start a new wave of enthusiasm for biocatalysis in the broader community and to give an overview of the field. Biocatalysis in Organic Synthesis offers critical reviews of organic transformations by experts, including experimental procedures. The organization is based on the type of reaction performed under biocatalysis. Volume 3 begins with oxidation. A chapter on enzyme-catalyzed dihydroxylation is followed by reviews of alkane oxidation. Oxidations of alcohols, carbonyl compounds, and heteroatoms are covered, as are halogenations. The use of biocatalysts in total synthesis, cascade reactions, and large-scale industrial applications is considered. Finally, emerging trends are discussed.