Aín

{{refimprove|date=May 2024}}

{{Infobox settlement

| name = Aín

| settlement_type = Municipality

| official_name =

| native_name =

| image_skyline = IglesiaParrq Aín.jpg

| image_alt =

| image_caption = St. Michael church.

| image_flag =

| image_shield = Escut d'Aín.svg

| nickname =

| motto =

| image_map =

| map_caption =

| pushpin_map = Spain

| pushpin_label_position =

| pushpin_map_caption = Location in Spain

| subdivision_type = Country

| subdivision_name = {{flag|Spain}}

| subdivision_type1 = Autonomous community

| subdivision_name1 = {{flag|Valencian Community}}

| subdivision_type2 = Province

| subdivision_name2 = Castelló

| subdivision_type3 = Comarca

| subdivision_name3 = Plana Baixa

| subdivision_type4 = Judicial district

| subdivision_name4 = Nules

| seat_type =

| seat =

| coordinates = {{coord|39|53|01|N|0|20|27|W|region:ES_type:city|display=inline}}

| coordinates_footnotes =

| elevation_m = 498

| elevation_min_m =

| elevation_max_m =

| area_footnotes =

| area_total_km2 = 12.30

| established_title =

| established_date =

| population_as_of = {{Spain metadata Wikidata|population_as_of}}

| population_footnotes = {{Spain metadata Wikidata|population_footnotes}}

| population_total = {{Spain metadata Wikidata|population_total}}

| population_demonym = Aïnencs

| population_note =

| population_density_km2 = auto

| blank_name_sec1 = Official language(s)

| blank_info_sec1 = Valencian and Spanish

| timezone = CET

| utc_offset = +1

| timezone_DST = CEST

| utc_offset_DST = +2

| postal_code_type = Postal code

| postal_code = 12530

| area_code_type = Dialing code

| area_code =

| leader_title = Mayor

| leader_name = Ricardo Miro Ballester

| leader_party =

| blank_name_sec2 = Climate

| blank_info_sec2 = Csa

| website = {{official website|http://portales.gva.es/ain/}}

| footnotes =

}}

Aín (Spanish: Ahín) is a town in eastern Spain, in the province of Castellón, part of the autonomous community of Valencia.

It is home to a 13th-century castle.