Castel Frentano

{{Infobox Italian comune

| name = Castel Frentano

| official_name = Comune di Castel Frentano

| image_skyline = Castel Frentano.jpg

| image_size =

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| image_caption =

| image_shield = Castel Frentano-Stemma.png

| shield_alt =

| image_map =

| map_alt =

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| pushpin_label_position =

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| coordinates = {{coord|42|12|N|14|21|E|region:IT_type:city(3977)|display=inline}}

| coordinates_footnotes =

| region = Abruzzo

| province = Chieti CH)

| frazioni = Ciommi, Colle Ceraso, Crocetta, Feltrino, Lentesco, Pera, Pietragrossa, Porrechi, San Rocco, San Vincenzo, Trastulli

| mayor_party =

| mayor = Patrizia De Santis Ciarrapico

| area_footnotes =

| area_total_km2 = 21.89

| population_footnotes =

| population_total = 4264

| population_as_of = 1 January 2023

| pop_density_footnotes =

| population_demonym = Castellini

| elevation_footnotes =

| elevation_m = 400

| twin1 =

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|istat=| saint = St. Stephen

| day = 3 August

| postal_code = 66032

| area_code = 0872

| website = {{official website|http://www.comunedicastelfrentano.it/}}

| footnotes =

}}

File:Castel Frentano piazza Caporali.JPG

Castel Frentano is a comune (municipality) in the province of Chieti, in the Italian region of Abruzzo.

During World War II, the town was liberated by the New Zealand Army (2nd New Zealand Division) on 2 December 1943.

It is known for bocconotto, a typical dessert.