Uusimaa Province

{{Short description|Former province of Finland}}

{{about|the 1831-1997 province|other uses|Uusimaa (disambiguation)}}

{{More citations needed|date=February 2023}}

{{Use dmy dates|date=May 2025}}

{{Infobox Former Subdivision

|native_name = Uudenmaan lääni
Nylands län
Губерния У́усимаа

|conventional_long_name = Province of Uusimaa

|common_name = Uusimaa

|subdivision = Province

|nation = Finland

|event_start =

|year_start = 1831

|date_start =

|event_end =

|year_end = 1997

|date_end =

|event1 =

|date_event1 =

|p1 = County of Nyland and Tavastehus

|flag_p1 = Flag of Russia.svg

|s1 = Southern Finland

|flag_s1 = Flag of Finland.svg

|image_flag =

|image_coat = Uudenmaan historiallisen maakunnan vaakuna.svg

|image_map = Uudenmaan lääni sijainti 1996.svg

|image_map_caption =

|capital = Helsinki

|stat_year1 = 1 January 1993

|stat_area1 = 10404

|stat_pop1 = 1277932

|leader1 =

|year_leader1=

|leader2 =

|year_leader2=

|title_leader= Governor

|footnotes =

}}

The Province of Uusimaa ({{langx|fi|Uudenmaan lääni}}, {{langx|sv|Nylands län}}, {{langx|ru|Нюландская губерния}}) was a province of Finland from 1831 to 1997.{{Cite web |title=Smart City Hub – World Alliance for Low Carbon Cities |url=https://www.walcc.org/about-us/smart-city-hub/ |access-date=2023-01-31 |website=walcc.org}}

It was established in 1831, when the County of Nyland and Tavastehus was divided into the Häme Province and Uusimaa Province.

In 1997 it was merged with the Kymi Province and the southern parts of the Häme Province into the new Southern Finland Province.{{Cite web |title=Smart City Hub – World Alliance for Low Carbon Cities |url=https://www.walcc.org/about-us/smart-city-hub/ |access-date=2023-01-31 |website=walcc.org}}