Nea Chalkidona

{{Infobox Greek Dimos

| name = Nea Chalkidona

| name_local = Νέα Χαλκηδόνα

|type = municipal unit

| image_map = DE Neas Chalkidonas.svg

|map_caption = Location within Central Athens regional unit

| periph = Attica

|periphunit = Central Athens

|municipality = Nea Filadelfeia-Nea Chalkidona

| pop_municunit = 9760

| population_as_of = 2021

| area_municunit = 0.800

| elevation = 100

| coordinates = {{coord|38|1.7|N|23|43.8|E|format=dms|display=inline,title}}

| postal_code = 143 xx

| area_code = 210

| licence = Z

| website = https://www.dimosfx.gr

| image_skyline =

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| city_flag =

| city_seal =

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}}

Nea Chalkidona ({{langx|el|Νέα Χαλκηδόνα}}, meaning New Chalcedon) is a town and a suburb in the Athens agglomeration, Greece. Since the 2011 local government reform it is part of the municipality Nea Filadelfeia-Nea Chalkidona, of which it is a municipal unit.{{Cite web|url=http://www.et.gr/idocs-nph/search/pdfViewerForm.html?args=5C7QrtC22wGYK2xFpSwMnXdtvSoClrL81-32jgAMSfbnMRVjyfnPUeJInJ48_97uHrMts-zFzeyCiBSQOpYnT00MHhcXFRTsb2fGphpq4MKX2ZkaHobySNnvZCNHXvYVvlf80XevW0Q.|title=ΦΕΚ B 1292/2010, Kallikratis reform municipalities|language=el|publisher=Government Gazette}}

Nea Chalkidona is an inner suburb of Athens, located 5 km north of the city centre. Its built-up area is continuous with that of municipalities of Athens and the surrounding suburbs Agioi Anargyroi and Nea Filadelfeia. At 0.80 km²{{cite web|url=http://dlib.statistics.gr/Book/GRESYE_02_0101_00098%20.pdf|publisher=National Statistical Service of Greece|title=Population & housing census 2001 (incl. area and average elevation)|language=el}} it is the smallest municipal unit in the Athens metropolitan area. The A1 motorway (Athens–Thessaloniki–Evzonoi) and Greek National Road 1 pass through Nea Chalkidona. The nearest metro station is Ano Patisia metro station.