Gonzalo Justo Facio Segreda (28 March 1918 – 24 January 2018) was a Costa Rican lawyer, politician, and diplomat.

[5] Facio first became Costa Rican ambassador to the United States in 1956, and held the post for two years.

He was named foreign minister in 1970, and was succeeded by Rafael Ángel Calderón Fournier in 1978.

He had three children (Sandra, Alda and Rómulo) from his first wife, María Lilia Montejo Ortuño.

From his third wife Julia Nubia Salmerón Mejía he had no offspring.