This chapter is a revision of the previous Science of Synthesis contribution describing methods for the synthesis of organometallic complexes of iron with hapticities between η6 (arene complexes) and η1 (carbene complexes and σ-bonded complexes).The main methods surveyed are the direct complexation of ligands, nucleophile addition to cationic complexes (which reduces the hapticity by one), protonation of unsaturated but non-coordinated sections of ligands or ligands bearing leaving groups (which increases the hapticity by one), and functional-group transformations of substituents on the haptyl ligand (which leaves the hapticity unchanged). Access to nonracemic complexes and the use of iron complexes in total synthesis are discussed.