Koivusuo Strict Nature Reserve

{{Short description|Nature reserve in Finland}}

{{One source|date=April 2025}}

{{Infobox protected area

| name = Koivusuo Strict Nature Reserve

| iucn_category = Ia

| iucn_ref =

| photo =

| photo_caption =

| map = Finland

| map_image =

| map_size =

| map_caption = Location in Finland

| relief = 1

| location = North Karelia, Finland

| nearest_city =

| nearest_town =

| coordinates = {{coord|62|58|32|N|31|24|12|E|display=inline,title}}

| coords_ref =

| length =

| length_mi =

| length_km =

| width =

| width_mi =

| width_km =

| area_km2 = 20

| area_ref =

| elevation =

| elevation_avg =

| elevation_min =

| elevation_max =

| dimensions =

| designation =

| authorized =

| created =

| designated =

| established = 1982

| named_for =

| visitation_num =

| visitation_year =

| visitation_ref =

| governing_body = Metsähallitus

| administrator =

| operator =

| owner =

| website =

| embedded =

}}

Koivusuo Strict Nature Reserve (Koivusuon luonnonpuisto){{cite web |title=Nature reserves – Research and limited hiking - Luontoon |url=https://www.luontoon.fi/en/articles/nature-reserves-research-and-limited-hiking |website=luontoon.fi |access-date=28 April 2025}} is a strict nature reserve located in the North Karelia region of Finland.

This reserve has been a regular place for visits by wolverines, bears, lynxes and wolves for most of the history.

Some of the Koitajoki trails (Tapion taival) go by the area.