in 2003, schaefer received the american chemical society award in theoretical chemistry and the ira remsen award of johns hopkins university. in 2004, a six-day conference was convened in gyeongju, korea on the “theory and applications of computational chemistry: a celebration of 1000 papers of professor henry f. schaefer iii.” schaefer was honored with the $10,000 joseph o. hirschfelder prize in 2005 by the university of wisconsin's theoretical chemistry institute, joining a distinguished list of some of the best-known scientists in the field.