Species lists of hornworts and liverworts with state distributions do not currently exist for Washington State. This lack of foundational knowledge frustrates current collectors and limits conservation efforts. This list was created using herbarium collections from the Consortium of Pacific Northwest Herbaria and the Consortium of North American Bryophyte Herbaria. The hornwort data reveal a very old dataset of 168 records, four accepted taxa distributed among 15 counties. The liverwort data reveal a dataset of 17,147 records, 201 accepted taxa distributed among 35 counties. Lists of Accepted Taxa and Excluded Taxa are given. Acknowledging limitations in the data, this effort will hopefully provide impetus for further collection and discussion of hornworts and liverworts in the state of Washington.