 Catalytic pyrolysis is a promising method for converting lignocellulosic biomass into chemicals and fuels compatible with current, petrochemical infrastructure. This process involves the use of catalysts to modify bio-oils produced during pyrolysis, which can be used to eliminate or substitute oxygen and oxygen-containing functionalities, as well as increase the hydrogen to carbon ratio of the final product. Recent research has focused on both hydrodeoxygenation and hydrogenation of bio-oil using various metal catalysts, as well as the production of aromatic compounds from bio-oil using cracking zeolites. Additionally, researchers have developed multifunctional catalysts that combine the benefits of both hydrodeoxygenation and zeolite cracking. These catalysts are designed to produce drop-in fuels and petrochemical commodities from wood and other lignocellulosic biomass streams. This article was authored by Theodore Dickerson and Wansoria.