Südtondern

{{Infobox settlement

| name = Südtondern

| native_name =

| native_name_lang = de

| settlement_type = Amt

| image_flag = Flagge Amt Südtondern.svg

| image_shield = DEU Südtondern COA.svg

| image_seal =

| image_map = Amt Suedtondern in NF.png

| map_caption = Map of Nordfriesland highlighting Südtondern

| coordinates =

| coor_pinpoint =

| coordinates_footnotes =

| subdivision_type = Country

| subdivision_name = Germany

| subdivision_type2 = State

| subdivision_name2 = Schleswig-Holstein

| subdivision_type3 = District

| subdivision_name3 = Nordfriesland

| established_title =

| established_date =

| extinct_title =

| extinct_date =

| seat_type = Region seat

| seat = Niebüll

| leader_party =

| leader_title = Amtsdirektor

| leader_name = Dr. Wolfgang Sappert

| area_total_km2 = 594,45

| population_footnotes =

| population_total = 40.113

| population_as_of = 2020-12-31

| population_density_km2 =

| website = [https://www.amt-suedtondern.de/ www.amt-suedtondern.de]

}}

Südtondern is an Amt ("collective municipality") in the district of Nordfriesland, in Schleswig-Holstein, Germany.