Molecular Br 2 adsorption on Ni(100) and Fe(110) has been studied by angle-resolved photoemission. The initial adsorption of Br 2 on both Ni(100) and Fe(110) is dissociative, but subsequent Br 2 exposure, at 110 K substrate temperatures, leads to molecular adsorption. The molecular Br 2 adsorbs on the dissociatively chemisorbed bromine overlayer on both Ni(100) and Fe(110) with the molecular axis approximately parallel with the surface normal. For Ni(100), molecular Br 2 adsorbs into an initial bound state which relaxes to a more stable bound state. Three molecular Br 2 adsorption states have been observed including condensed Br 2. The nature of Br 2 bonding with the substrate is discussed as well.