Bishop Blanchet High School is a private coeducational Catholic high school located north of Green Lake in Seattle, United States. The school was founded in 1954 by the Archdiocese of Seattle, and named for the first bishop of the diocese, A.M.A. Blanchet (1797–1887). Originally named Blanchet High School, in 1999 the title Bishop was added to make the school easily identified as Catholic.