Jämsä sub-region

{{Unreferenced|date=October 2021}}

{{Infobox settlement

| name =Jämsä sub-region

| settlement_type = Sub-region

| native_name =Jämsän seutukunta

| native_name_lang =

| other_name =

| image_shield =

| shield_size =

| image_map = Jämsän seutukunta sijainti Suomi.svg

| mapsize =

| subdivision_type = Country

| subdivision_name = {{flag|Finland}}

| subdivision_type1 = Region

| subdivision_name1 = Central Finland

| seat_type = Capital

| seat = Jämsä

| leader_party =

| leader_title =

| leader_name =

| area_footnotes =

| area_total_km2 =

| area_land_km2 =

| area_water_km2 =

| population_footnotes =

| population_total =25209

| population_as_of = 2011

| population_density_km2 = auto

| coordinates =

| timezone1 = EET

| utc_offset1 = +2

| timezone1_DST = EEST

| utc_offset1_DST = +3

| iso_code =

| blank_name_sec1 =

| blank_info_sec1 =

| website =

| footnotes =

}}

Jämsä sub-region is a subdivision of Central Finland and one of the sub-regions of Finland since 2009.