This chapter provides an overview of recent advances in using eco-friendly plant extracts as green corrosion inhibitors for metals and alloys in corrosive mediums, with a focus on literature from the past five years. Characterization techniques, including gravimetric analysis, electrochemical impedance spectroscopy, kinetic and adsorption parameters, computational analysis, and surface morphologies techniques, are discussed to provide insights into the inhibition mechanism and the morphological configuration. This chapter will give the audience a better understanding of the properties, applicability, and recent developments in the utilization of natural products as corrosion inhibitors in several corrosive systems.