Gallaudet University /ˌɡæləˈdɛt/ is a federally chartered private university for the education of the Deaf and hard of hearing located in Washington, D.C., on a 99-acre (0.40 km2) campus.

Founded in 1864, Gallaudet University was originally a grammar school for both deaf and blind children. It was the first school for the advanced education of the deaf and hard of hearing in the world and remains the only higher education institution in which all programs and services are specifically designed to accommodate deaf and hard of hearing students. Hearing students are admitted to the graduate school and a small number are also admitted as undergraduates each year. The university was named after Thomas Hopkins Gallaudet, a notable figure in the advancement of deaf education, who was hard of hearing.