This is a list of wars involving Finland since its declaration of independence on 6 December 1917.
List
{| class="wikitable"
|-
! rowspan="2" width=150px| Conflict
! rowspan="2" width=150px| Party 1
! rowspan="2" width=150px| Party 2
! rowspan="2" width=180px| Result
! colspan="2"| Finnish leaders
! rowspan="2"| Finnish losses<br />(dead or missing)
|-
! width=110px| Head of State
! width=110px| Chief of Defence
|-
|style="background:#efefef"| Finnish Civil War<br />(1918)
|style="background:#efefef"|
|style="background:#efefef"|
|style="background:#D0FFD0"| Finnish Whites victory
- German hegemony until November 1918
- Division in Finnish society
- Collapse of the Finnish Reds
- Dissolution of the Finnish Socialist Workers' Republic
| rowspan="1" style="background:#efefef" |
| rowspan="1" style="background:#efefef" |
|style="background:#efefef"|
|-
|style="background:#efefef"| Heimosodat<br />(1918–1922)
|style="background:#efefef"| (Estonian War of Independence)
|style="background:#efefef"| (Viena expedition and Petsamo expeditions)
|style="background:#BBF"| Treaty of Tartu
- Finnish victory in Estonia and annexation of Petsamo
- Soviet victory in White Karelia, Aunus, Petrograd and East Karelia
| rowspan="1" style="background:#efefef" |
| rowspan="1" style="background:#efefef" |
|style="background:#efefef"|
|-
|-
|style="background:#efefef"| Winter War<br />(1939–1940)<br />Part of the European theatre of World War II
|style="background:#efefef"|
- Foreign volunteers
|style="background:#efefef"|
- Finnish Democratic Republic
|style="background:#BBF"| Moscow Peace Treaty
- Soviet conquest of Finland fails
- Cession of the Gulf of Finland islands, Karelian Isthmus, Ladoga Karelia, Salla, Rybachy Peninsula and lease of Hanko to the Soviet Union
|style="background:#efefef"|
| rowspan="3" style="background:#efefef" |
|style="background:#efefef"|
|-
|style="background:#efefef"| Continuation War<br />(1941–1944)<br />Part of the Eastern Front of World War II
|style="background:#efefef"| <br /><br />Naval support:<br />
|style="background:#efefef"| <br />Air support:<br />
|style="background:#FFD0D0"| Defeat
- Moscow Armistice
- Start of the Lapland War
- Petsamo ceded to the USSR
- Porkkala Peninsula leased to the USSR for 50 years
- Hanko retaken by Finland
|style="background:#efefef"|
|style="background:#efefef"|
|-
|style="background:#efefef"| Lapland War<br />(1944–1945)<br />Part of the Second World War
|style="background:#efefef"| Finland<br />Minor air support:<br /> Soviet Union
|style="background:#efefef"| Germany
|style="background:#D0FFD0"| Victory
- German retreat from Finnish territory
|style="background:#efefef"|
|style="background:#efefef"|
|}
See also
- Military of the Grand Duchy of Finland
- Military history of Finland
- List of Finnish treaties
- Finland Guard Regiment