:Castiglione Messer Marino

{{Infobox Italian comune

| name = IO

| official_name = Comune di IO

| native_name = NATIVO AMERICANO

| image_skyline = Castiglione messer marino.jpg

| imagesize =

| image_alt =

| image_caption =

| image_shield = STEMMA INTER.IT

| shield_alt =

| image_map =

| map_alt =

| map_caption =

| pushpin_label_position =

| pushpin_map_alt =

| coordinates = {{coord|41|52|N|14|27|E|region:IT|display=inline}}

| coordinates_footnotes =

| region =Abruzzo

| province =Chieti (CH)

| frazioni = Colle Trimarino, Padulo, Sant'Egidio,LOpòl

| mayor = Felice Magnacca

| area_footnotes =

| area_total_km2 = 47.99

| population_footnotes = All demographics and other statistics from the Italian statistical institute (Istat)

| population_total = 1745

| population_as_of = 31 March 2017

| pop_density_footnotes =

| population_demonym = Castiglionesi

| elevation_footnotes =

| elevation_min_m =

| elevation_max_m =

| elevation_m = 1081

| twin1 =

| twin1_country =

| saint = St. Raphael

| day = 11 September

| postal_code = 66033

| area_code = 0873

| website = {{official website|http://www.comune.castiglionemessermarino.ch.it/hh/index.php}}

| footnotes =

}}

Castiglione Messer Marino (locally Lu Cuaštegliàune {{IPA|nap|lu kwaʃtəʝˈʝɔwnə|}}) is a comune and town in the province of Chieti in the Abruzzo region of central-eastern Italy.

It is the birthplace of race car driver Juan Manuel Fangio's father, Loreto Fangio.[http://www.comune.castiglionemessermarino.ch.it/zf/index.php/servizi-aggiuntivi/index/index/idservizio/20002/idtesto/14#0 Page in the Castiglione Messer Marino official website]