:Rantasalmi

{{expand Finnish|date=June 2023|topic=geo}}

{{Infobox settlement

|name = Rantasalmi

| official_name = {{lang|fi|Rantasalmen kunta}}
{{lang|sv|Rantasalmi kommun}}

| settlement_type = Municipality

| image_skyline = Rantasalmi centre.JPG

| image_caption = Rantasalmi centre

| image_shield = Rantasalmi.vaakuna.svg

| shield_size = 120x80px

| image_map = Rantasalmi sijainti Suomi.svg

| map_caption = Location of Rantasalmi in Finland

|coordinates = {{coord|62|04|N|028|18|E|display=inline,title}}

|subdivision_type = Country

|subdivision_name = {{flag|Finland}}

| subdivision_type1 = Region

| subdivision_name1 = Southern Savonia

| subdivision_type2 = Sub-region

| subdivision_name2 = Savonlinna

| leader_title = Municipal manager

| leader_name = Kristiina Järvenpää

| established_title = Charter

| established_date = 1578

|area_footnotes = {{Data Finland municipality|area_footnotes|Rantasalmi}}

|area_total_km2 = {{Data Finland municipality|area_total_km2|Rantasalmi}}

|area_land_km2 = {{Data Finland municipality|area_land_km2|Rantasalmi}}

|area_water_km2 = {{Data Finland municipality|area_water_km2|Rantasalmi}}

|area_rank = {{Data Finland municipality|area_rank|Rantasalmi}}

|population_as_of = {{Data Finland municipality|population_as_of|Rantasalmi}}

|population_footnotes = {{Data Finland municipality|population_footnotes|Rantasalmi}}

|population_total = {{Data Finland municipality|population_total|Rantasalmi}}

|population_density_km2 = {{Data Finland municipality|population_density_km2|Rantasalmi}}

|population_rank = {{Data Finland municipality|population_rank|Rantasalmi}}

|demographics_type1 = {{Data Finland municipality|demographics_type1|Rantasalmi}}

|demographics1_footnotes = {{Data Finland municipality|demographics1_footnotes|Rantasalmi}}

|demographics1_title1 = {{Data Finland municipality|demographics1_title1|Rantasalmi}}

|demographics1_info1 = {{Data Finland municipality|demographics1_info1|Rantasalmi}}

|demographics1_title2 = {{Data Finland municipality|demographics1_title2|Rantasalmi}}

|demographics1_info2 = {{Data Finland municipality|demographics1_info2|Rantasalmi}}

|demographics1_title3 = {{Data Finland municipality|demographics1_title3|Rantasalmi}}

|demographics1_info3 = {{Data Finland municipality|demographics1_info3|Rantasalmi}}

|demographics1_title4 = {{Data Finland municipality|demographics1_title4|Rantasalmi}}

|demographics1_info4 = {{Data Finland municipality|demographics1_info4|Rantasalmi}}

|demographics_type2 = {{Data Finland municipality|demographics_type2|Rantasalmi}}

|demographics2_footnotes = {{Data Finland municipality|demographics2_footnotes|Rantasalmi}}

|demographics2_title1 = {{Data Finland municipality|demographics2_title1|Rantasalmi}}

|demographics2_info1 = {{Data Finland municipality|demographics2_info1|Rantasalmi}}

|demographics2_title2 = {{Data Finland municipality|demographics2_title2|Rantasalmi}}

|demographics2_info2 = {{Data Finland municipality|demographics2_info2|Rantasalmi}}

|demographics2_title3 = {{Data Finland municipality|demographics2_title3|Rantasalmi}}

|demographics2_info3 = {{Data Finland municipality|demographics2_info3|Rantasalmi}}

|blank_name = {{Data Finland municipality|blank_name|Rantasalmi}}

|blank_info = {{Data Finland municipality|blank_info|Rantasalmi}}

|timezone = EET

|utc_offset = +02:00

|timezone_DST = EEST

|utc_offset_DST = +03:00

| website = {{Url|https://www.rantasalmi.fi/}}

}}

Rantasalmi is a municipality of Finland. It is located in the Southern Savonia region, {{convert|43|km}} northwest of Savonlinna and {{convert|92|km}} northeast of Mikkeli. The municipality has a population of {{formatnum: {{Data Finland municipality/population count|Rantasalmi}}}} ({{#time: j F Y|{{Data Finland municipality/population count|sourcedate}} }}){{Cite web|url=http://vrk.fi/default.aspx?docid=6847&site=3&id=0|title=VÄESTÖTIETOJÄRJESTELMÄ REKISTERITILANNE 31.1.2012|publisher=Population Register Center of Finland|language=fi, sv|access-date=11 February 2014|url-status=dead|archive-url=https://web.archive.org/web/20131003192016/http://vrk.fi/default.aspx?docid=6847&site=3&id=0|archive-date=3 October 2013}}

and covers an area of {{convert|{{Data Finland municipality/total area|Rantasalmi}}|km2}} of which {{convert|{{Data Finland municipality/waters area|Rantasalmi}}|km2|abbr=on}}

is water. The population density is {{convert|{{Data Finland municipality/population density|Rantasalmi|round=2}}|PD/km2}}.

Neighbouring municipalities are Joroinen, Juva, Savonlinna, Sulkava and Varkaus.

The municipality is unilingually Finnish.