Introduction and history / Robert H. Crabtree -- Iridium-catalyzed hydrogenation using phosphorus ligands / Montserrat Diaeguez, Oscar Paamies, and Carmen Claver -- Iridium-catalyzed asymmetric hydrogenation of olefins with chiral N, P and C, N ligands / David Woodmansee and Andreas Pfaltz -- Iridium-catalyzed hydrogen transfer reactions / Ourida Saidi and Jonathan M.J. Williams -- Formation of C-C bonds via iridium-catalyzed hydrogenation and transfer hydrogenation / John F. Bower and Michael J. Krische -- Ir-catalyzed functionalization of C-H bonds / Jongwook Choi and Alan S. Goldman -- Iridium-catalyzed allylic substitution / John F. Hartwig and Mark J. Pouy -- Iridium-catalyzed 1,3-dipolar cycloadditions / Daniel Carmona and Luis A. Oro.