Forests play crucial roles in maintaining global ecosystems, carbon sequestration, and supporting countless species of plants and animals. The largest forests are typically found in boreal, temperate, and tropical regions. Let’s take a look at the largest forests on Earth.
Malaysian Rainforests
© Ondřej Žváček
The Malaysian rainforests refer to the diverse and extensive forest ecosystems found in Malaysia, a Southeast Asian country known for its rich natural biodiversity. These rainforests are located on the Malay Peninsula and the island of Borneo, which is shared with Indonesia and Brunei. The Malaysian rainforests include several types of forest, such as tropical rainforests, mangrove forests, and peat swamp forests. These forests are home to a wide range of plant and animal species, many of which are endemic and found nowhere else on Earth.
Daintree Rainforest
© John Robert McPherson
The Daintree Rainforest is a unique and ancient tropical rainforest located in Queensland, Australia. It is one of the oldest continuous rainforests in the world and is renowned for its biodiversity, pristine landscapes, and ecological significance. The Daintree Rainforest is part of the Wet Tropics of Queensland World Heritage Area, recognized for its exceptional value in terms of natural beauty and ecological diversity. The rainforest is home to a vast array of plant and animal species, many of which are unique and endemic to the region.
Tongass National Forest
© Mark Brennan
The Tongass National Forest is the largest national forest in the United States and is located in the southeastern part of the state of Alaska. It is known for its vast wilderness, diverse ecosystems, and critical role in both regional and global conservation efforts. The Tongass National Forest is characterized by its temperate rainforests, towering spruce and hemlock trees, pristine rivers, fjords, and abundant wildlife. It is home to various species, including brown bears, bald eagles, salmon, and Sitka black-tailed deer.
Great Bear Rainforest
© Sam Beebe
The Great Bear Rainforest is a temperate rainforest located along the central and northern coast of British Columbia, Canada. It is one of the world’s largest remaining temperate rainforests and is known for its stunning natural beauty, rich biodiversity, and unique ecosystems. The Great Bear Rainforest is home to a wide range of plant and animal species, including ancient cedar and spruce trees, salmon-bearing rivers, and important habitats for species like the Kermode (spirit) bear, a rare subspecies of black bear with a white coat.
Valdivian Temperate Rainforest
© Pontificia Universidad Católica
The Valdivian Temperate Rainforest is a unique and ecologically rich forest region located in South America, primarily in southern Chile and a small part of Argentina. It is considered one of the largest temperate rainforests in the world and is known for its high levels of biodiversity and stunning landscapes. The Valdivian Rainforest is characterized by its lush vegetation, including various species of trees, ferns, mosses, and epiphytes. It’s home to numerous endemic species and supports diverse wildlife, including the endangered pudú deer and the Darwin’s fox.
Greenland Ice Sheet
© Hannes Grobe
The Greenland Ice Sheet is a massive ice body covering most of the island of Greenland. While not a traditional forest, it’s an essential part of the Earth’s cryosphere and plays a critical role in global climate and sea level regulation. The Greenland Ice Sheet is unique in that it contains about 10% of the world’s freshwater ice. It acts as a significant contributor to global sea level rise when it melts or calving icebergs into the ocean. The sheet’s health and stability are of particular interest due to ongoing concerns related to climate change and its potential impact on the ice’s rate of melt.
Siberian Taiga
© Elkwiki
The Siberian Taiga is a significant part of the boreal forest biome that covers vast stretches of Siberia in Russia. It is one of the largest forested areas in the world and plays a critical role in global climate regulation, carbon storage, and biodiversity. The Siberian Taiga is characterized by its cold climate, dominated by coniferous trees like pine, spruce, and larch. It provides habitat for numerous wildlife species, including Siberian tigers, brown bears, moose, and various bird species.
Boreal Forest (Taiga)
© Ximonic, Simo Räsänen
The boreal forest, also known as the taiga, is the world’s largest terrestrial biome and stretches across the northern latitudes of North America, Europe, and Asia. It is characterized by its cold climate and dominated by coniferous trees such as spruce, pine, and fir. The boreal forest plays a crucial role in carbon sequestration and helps regulate the Earth’s climate. It provides habitat for numerous species of plants and animals, many of which are uniquely adapted to its harsh conditions.
Congo Basin
© MONUSCO
The Congo Basin is another expansive and ecologically important region, characterized by its tropical rainforests and diverse ecosystems. The countries that are part of the Congo Basin include the Democratic Republic of Congo, Republic of Congo, Central African Republic, Cameroon, Equatorial Guinea, Gabon, and parts of Angola and Zambia.
Amazon Rainforest
© Neil Palmer/CIAT
The Amazon Rainforest is an immense and ecologically crucial region that spans multiple countries in South America. Amazon Rainforest has been facing deforestation and habitat loss due to factors such as logging, agriculture, mining, and infrastructure development. These activities have significantly impacted the overall size and health of the rainforest.

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