Country tag for Finland is:
FIN
If you want play for Finland HOI4 you could use tag command:
tag FIN
To annex Finland in HOI4 you could use annex command:
annex FIN
To delete all Finland units you could use deleteallunits command:
deleteallunits FIN
To add interests on Finland you could use add_interest command:
add_interest FIN
To remove interests on Finland you could use remove_interest command:
remove_interest FIN
To start occupation on Finland you could use occupationpaint command:
occupationpaint FIN
More country tags for HOI4 or more cheats for Hearts of Iron IV