Marie Teresa Ríos (pen name "Tere Ríos"), (November 9, 1917 – October 17, 1999) was the author of the 1965 book The Fifteenth Pelican which was the basis for the 1960s television sitcom, The Flying Nun. Ríos was the mother of Humbert Roque Versace, the first U.S. Army Prisoner of war in Southeast Asia awarded the Medal of Honor.