Book excerpt: Handbook of Heterocyclic Corrosion Inhibitors presents a comprehensive overview of corrosion inhibition using heterocyclic compounds. It covers numerous, emerging heterocyclic compound-based industrial corrosion inhibitors that are oriented toward minimizing corrosive damages and prevention methods. Describing the fundamentals of heterocycles, corrosion, and corrosion inhibition, the book considers the potential of different series of N-heterocycles, such as acridine and acridone-based, carbazole-based, imidazole and imidazoline-based, indole and indoline-based, melamine-based, etc. It presents the corrosion inhibition potential of oxygen- and sulfur-based heterocycles compounds. The book also explores issues with corrosion as a result of improper design with descaling, acidification, refinery, and transport processes. The book will be of interest to researchers and graduate students studying corrosion science, heterocyclic chemistry, material science and engineering, energy, chemistry, and colloid science. It will also be a valuable reference for corrosion scientists and R&D engineers working in industrial corrosion and industrial-based corrosion protection systems.