Ko te Whare Wānanga o Washington i St. Louis (WashU, or WUSTL) he whare wānanga rangahau tūmataiti i St. Louis, Missouri. I whakatūria i te tau 1853, i tapaina hoki ki a George Washington, kei te whare wānanga ngā ākonga me ngā kaiako mai i ngā whenua 50 katoa o Amerika me ngā whenua neke atu i te 120.
Ko Missouri