Who Are the Punan? Borneo’s Indigenous Hunter-Gatherers

The Punan are a constellation of Indigenous groups spread across the interior rainforests of Borneo, primarily in the Malaysian state of Sarawak and the Indonesian province of Kalimantan. Often described as one of the last communities in Southeast Asia with roots in a mobile hunting-and-gathering way of life, they have attracted intense interest from geneticists, anthropologists, and conservation groups alike. Recent genetic research places some Punan lineages among the oldest continuous inhabitants of Borneo, with ancestry connections stretching back more than 7,500 years, complicating earlier assumptions that they were simply farmers who wandered into the forest.

Who the Punan Are and Why the Name Gets Confusing

The term “Punan” does not refer to a single, unified ethnic group. It is an umbrella label applied to several distinct communities across Borneo’s vast interior, including the Punan Batu of northeastern Kalimantan, the Punan Tubu along the Tubu River system, and the Penan of Sarawak (sometimes spelled “Punan” in older literature). These groups speak different languages, occupy different river basins, and have varying degrees of contact with settled agricultural neighbors like the Kenyah, Kayan, and Lundayeh peoples. What they share is a historical orientation toward mobile foraging in tropical rainforest, a reliance on wild sago palm as a staple starch, and a social structure that tends toward egalitarianism rather than rigid hierarchy.

The diversity within the “Punan” label matters because generalizations about one group do not always hold for another. The Punan Batu, for instance, still practice some mobile hunting and gathering, while the Punan Tubu have largely transitioned to settled village life over recent decades. Researchers who study them are careful to specify which community they mean, and readers encountering the term should keep this internal variation in mind.

Deep Ancestry in Borneo

One of the longest-running debates about the Punan has been whether they represent ancient, continuous forest dwellers or whether they are descendants of farming communities who, at some point in history, abandoned agriculture and retreated into the forest. The “reversion hypothesis” held sway for decades in some circles, partly because it was hard to explain how hunter-gatherers could persist in a landscape dominated by powerful agricultural societies. Genetic evidence has now substantially undercut that idea.

A study published in Cell Reports analyzed the genetic ancestry of the Punan Batu, Punan Tubu, and Aput peoples of northeastern Borneo. The researchers found that the Punan Batu carry a deep Asian genetic signal that branches off before the ancestry associated with the Austronesian expansion, the massive maritime migration that brought farming peoples across island Southeast Asia starting roughly 4,000 to 5,000 years ago. This split predates modern and ancient Austronesian-ancestry proxies, suggesting a time depth of more than 7,500 years.¹

The Punan Batu differ from neighboring agriculturalists in two distinct ways. First, their core ancestry does not emerge from the Austronesian-expansion-related genetic cluster, nor does it derive from mainland Southeast Asian groups. They sit phylogenetically between the two, outgrouping modern proxies of Austronesian ancestry and lacking the genetic drift shared by relevant ancient samples from the Philippines, southern China, and Tonga. Second, unlike other Bornean groups tested, the Punan Batu do not show the composite mix of Austronesian-related and mainland Southeast Asian–related ancestry that characterizes agricultural Borneans.²

This genetic picture strongly argues that the ancestors of these Punan groups were not Austronesian seafarers who later dropped farming, and it points to considerable time depth of genetic isolation. The finding does not mean all people called “Punan” share identical ancestry; the Punan Tubu, for example, show somewhat different genetic profiles from the Punan Batu. But the results confirm that at least some Punan lineages have been in Borneo for thousands of years longer than the agricultural groups who now surround them.

Forest Life and the Sago Economy

The traditional subsistence of mobile Punan groups centers on wild sago palm, hunted game, river fish, and a wide range of gathered forest products including fruits, nuts, tubers, and insects. Wild sago provides a reliable carbohydrate base. Unlike cultivated rice, sago palms grow naturally in the swampy lowland and riverine forests of Borneo, and processing them requires labor-intensive pounding and washing but no cleared fields or planting seasons. A single mature sago palm can yield enough starch to feed a small family for days.

Hunting traditionally relied on blowpipes with poison darts, supplemented by dogs and, more recently, shotguns where available. The bearded pig, one of Borneo’s most abundant large mammals, has historically been the primary game animal, though various deer, primates, and smaller mammals also contribute. Fishing in the clear upland rivers adds protein and fat to the diet.

The mobility that defines traditional Punan life is not aimless wandering. Groups move through established territories along river systems, following the seasonal availability of sago stands, fruit trees, and game. Camps are temporary but revisited, and the landscape is read through an intimate knowledge of which trees are fruiting, where sago palms are maturing, and how animal populations are cycling. This mobility pattern has been one of the traits that state authorities have found hardest to accommodate, as it does not fit neatly into cadastral maps or administrative boundaries.

Trade Networks and Forest Commerce

The image of the Punan as isolated deep-forest people detached from the wider economy is misleading. For centuries, Punan groups have been embedded in regional trade networks, exchanging high-value forest products for manufactured goods they could not produce themselves. Research on the Punan Tubu of eastern Kalimantan documents exchanges of rhinoceros horns with the Kenyah people, as well as extensive transactions in eaglewood (gaharu), ketipai resin, and dammar gum. These forest products were traded to acquire swords, ceramic jars, and hunting dogs. The Punan of the middle Tubu River exchanged gums, blowpipes, and rattan mats with the Lundayeh people for swords or salt.³

Eaglewood deserves particular mention because it has been one of the most valuable non-timber forest products in Southeast Asian trade for over a thousand years. The resinous heartwood of infected Aquilaria trees, prized for incense and perfume, commanded extraordinary prices in Chinese, Middle Eastern, and Indian markets. Punan collectors were often the people who located and harvested these trees deep in the interior, and the eaglewood trade connected them, through intermediaries, to global commerce long before colonial administrators arrived. The relationship between Punan foragers and their agricultural trading partners was not one of simple dependency; it was a specialized economic niche in which the Punan’s deep forest knowledge was a genuine competitive advantage.

What Happens When Punan Communities Settle

Over the past several decades, many Punan groups have shifted from mobile foraging to sedentary village life. This transition has happened through a combination of government resettlement programs, missionary activity, logging concessions that disrupted forest territories, and the pull of schools, clinics, and cash-economy access. The consequences have been studied most closely in terms of diet and physical health.

Research comparing Punan communities at different distances from urban centers found a clear gradient: the more remote the community, the more diversified the diet, the greater the contribution of forest resources, and the better the nutritional status and physical fitness. Proximity to towns did not simply mean a switch from sago to rice. It meant a narrowing of dietary diversity and a decline in the physical activity patterns that came with mobile foraging. The study noted that the deterioration in diet and fitness was not caused by agriculture itself but rather by the broader transition from a nomadic to a settled way of life.⁴

That distinction is worth emphasizing. Settled Punan communities that maintained some garden cultivation and forest foraging fared better than those that became dependent on purchased rice and processed foods from town markets. The problem was not farming per se but the loss of the varied, physically demanding daily routine that mobile foraging provided. Town-proximate Punan consumed more sugar, more refined carbohydrates, and fewer wild vegetables and animal proteins than their forest-dwelling relatives.

Rapid Biological Changes After Lifestyle Transition

Perhaps the most striking recent finding about the Punan concerns what happens at the molecular level when a foraging community transitions to a settled agricultural lifestyle. A preprint study examined the transcriptomes and DNA methylation patterns of Punan Batu who still forage, Punan Tubu who have resettled into farming communities, and neighboring Lundayeh agriculturalists. Despite sharing recent common ancestry, the resettled Punan Tubu showed gene expression and methylation profiles far more similar to the Lundayeh farmers than to their still-foraging Punan Batu relatives. The comparison found roughly 87% fewer differentially expressed genes between the resettled Punan and the farmers, and overall a 77% shift toward an agricultural molecular state.⁵

The genes most affected by this convergence were those involved in fat metabolism and immune function. This makes biological sense: a shift from a high-activity, wild-food diet to a more sedentary, starch-heavy lifestyle would be expected to alter how the body handles energy storage and inflammatory responses. What surprised the researchers was the speed. These molecular changes had occurred within a generation or two of settlement, far faster than genetic evolution could account for. The implication is that the human body’s regulatory machinery can be dramatically reshaped by lifestyle change on very short timescales, which has relevance well beyond the Punan to any population undergoing rapid subsistence transitions.

Medicinal Plant Knowledge

Like many forest-dwelling peoples, the Punan possess extensive ethnobotanical knowledge, and documenting it has become urgent as settlement and deforestation erode both the forests themselves and the cultural transmission of plant-use traditions. An ethnobotanical survey of Punan communities in Sarawak documented 19 plant species from 17 different families used for medicinal purposes. The most frequently reported species were Senna alata (a legume used widely across the tropics for skin conditions), Elephantopus scaber (a small herb), and Mimosa pudica (the well-known “sensitive plant”). The conditions most commonly treated with these plant medicines were respiratory ailments, eye problems, and skin diseases.⁶

Nineteen species may sound modest, but the survey captured only the knowledge that community members were willing and able to share with outside researchers, and it focused specifically on medicinal plants rather than the broader spectrum of plants used for food, construction, dye, poison, and ceremony. The diversity of plant families represented hints at deep empirical observation: the Punan are not relying on a single botanical lineage for their remedies but drawing on a wide pharmacological range. Conservation scientists have flagged this knowledge as vulnerable because younger Punan who grow up in settled communities with access to clinics and pharmacies may never learn the plant identifications and preparation methods that older generations carried.

Land Rights and the Politics of Settlement

The political situation of the Punan, and particularly the Punan Batu as one of the last semi-nomadic groups in Borneo, is shaped by a fundamental tension. Indonesian and Malaysian state systems are built around fixed addresses, land titles, identity cards, and administrative boundaries. Mobile foraging does not fit into any of these categories cleanly. Government policies have historically treated nomadic life as a problem to be solved, framing it as backwardness or poverty rather than as a viable and chosen way of life.

A study of a conservation NGO’s efforts to secure customary forest rights for the Punan Batu illustrates this tension vividly. The organization used scientific research and participatory mapping to build a case for district-level recognition of Punan Batu land claims. The effort succeeded in securing government support. But the process itself acted as what the researchers called “government technologies,” reshaping the Punan Batu’s fluid spatial practices into fixed territorial boundaries, formalizing their egalitarian social structures into recognizable leadership hierarchies, and redefining them as “state-recognisable subjects.” In other words, the very act of gaining land recognition required the Punan Batu to become less like themselves.⁷

This is not a problem unique to the Punan. Indigenous peoples worldwide have faced similar binds when engaging with state legal systems that require them to translate fluid, relational land-use practices into the rigid language of property law. For the Punan Batu, the stakes are especially high because their remaining forest territories overlap with logging concessions, palm-oil plantations, and conservation areas, all of which have their own legal claims and political constituencies. Securing formal land rights may be the only way to prevent total displacement, even if the process of formalization distorts the very relationship to the land that made the claim meaningful in the first place.

The Egalitarian Ethos and Sharing Norms

One of the features that anthropologists have consistently noted across Punan groups is an ethic of sharing and egalitarianism that is characteristic of mobile hunter-gatherer societies worldwide. Large game, in particular, is distributed across the community rather than consumed only by the hunter’s household. Leadership tends to be informal and based on personal qualities rather than hereditary rank, in contrast to the stratified chieftainship systems of neighboring Kayan and Kenyah agricultural groups. Decisions are typically reached through discussion rather than command.

This egalitarian ethos has practical roots in mobile foraging, where accumulated material wealth is a burden rather than an advantage. When you move camp every few weeks, hoarding goods makes no sense, and social relationships matter more than stored surplus. But it also creates friction with the structures that settlement and state engagement demand. Village governance, interaction with district officials, and participation in development programs all tend to reward or require identifiable leaders, written agreements, and hierarchical decision-making. The formalization of Punan social structures described in the land-rights research is one manifestation of this broader pressure to remake egalitarian societies in the image of the bureaucratic state.

Rattan, Blowpipes, and Shifting Material Culture

The material culture of mobile Punan groups is lightweight by necessity. Rattan weaving is a core skill, producing baskets, mats, baby carriers, and fish traps adapted to forest life. Blowpipes, traditionally made from ironwood with darts tipped in poison from the upas tree (Antiaris toxicaria), were the primary hunting weapon for centuries and remain in use in some communities. The craftsmanship involved in making a straight, accurate blowpipe is considerable; the bore must be perfectly aligned over a length of two meters or more.

As communities settle, material culture shifts. Shotguns replace blowpipes where ammunition is available. Plastic containers replace woven baskets. Corrugated metal replaces bark and leaf roofing. Younger people in settled communities may never learn to weave rattan or bore a blowpipe, and the knowledge loss accelerates with each generation. Some Punan communities have attempted to maintain craft traditions through small-scale commercial production, selling woven goods and carved items to visitors or at regional markets. Whether this commercial adaptation can sustain the skills and the cultural meaning attached to them remains an open question, one that many Indigenous communities around the world are grappling with simultaneously.

The forest products that once linked the Punan to regional and global trade networks have also shifted in availability and value. Eaglewood has become dramatically rarer due to overharvesting, and the wild Aquilaria trees that produced it are now protected under international trade regulations in many jurisdictions. Rhinoceros horn trade, once part of the exchange network documented among the Punan Tubu, is now illegal. The commercial ecology that sustained the Punan’s specialist niche within Bornean society has changed underneath them, adding economic pressure to the cultural and political pressures already pushing toward settlement.