This guide provides a comprehensive and authoritative review of name reactions on homologation. Each section includes a description of the reaction, the historical perspective, a mechanism for the reaction, variations and improvements on the reaction, synthetic utilities of the reaction, experimental details, and current references to the primary literature. The primary topics include organometallics (palladium, organozinc, organocopper, other organometallics), carbon-chain homologation, (rearrangement, concerted rearrangement, cationic rearrangement, anionic rearrangement, other rearrangements), radical chemistry, asymmetric C-C bond formation, and other types (such as Cannizzaro disproportionation, Eschenmoser coupling, Mannich, Mitsunobu, Passerini, and Ugi).