Lao

 

The Lao or Isan people form the dominant ethnocultural group of northeastern Thailand, though their identity is often framed within the broader category of “Thai” in official discourse. Anthropologically, they are closely related to Lao populations across the Mekong River, and many scholars describe them as part of a wider Tai-Lao cultural world rather than a separate ethnicity. Historically, large populations were relocated into what is now Isan during the expansion of the Siamese state in the 18th and 19th centuries, which helped shape the region’s demography.

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The primary language of this group is Isan, a Tai language that is mutually intelligible to a large extent with Lao, the national language of Laos. Despite the dominance of Central Thai in education, media, and administration, Isan remains the language of everyday life in rural and many urban communities. Linguistically and culturally, it preserves many features that align more closely with Lao traditions than with those of central Thailand.

 

Culturally, the Isan/Lao population maintains strong trans-Mekong connections, expressed through shared folklore, music, cuisine, and ritual practices. Elements such as mor lam music, sticky rice as a staple food, and village-based social organization reflect this continuity. Even where political borders have separated communities, kinship ties and cultural memory continue to reinforce common bonds.

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Religiously, the majority of Isan people practice Theravada Buddhism, but this is deeply intertwined with animist beliefs. Local spirit traditions—often referred to as phi beliefs—play a central role in everyday life, governing relationships with land, ancestors, and unseen forces. Rituals to appease or honor spirits coexist seamlessly with Buddhist merit-making practices, illustrating a layered religious system that is characteristic of much of mainland Southeast Asia.

 

Khmer

 

Direct descendants of the populations that once formed part of the Khmer Empire which flourished between the 9th and 15th centuries, this community has an enduring imprint across eastern Thailand. Today, Khmer communities are primarily organized around village-based agrarian life, with social structures that emphasize bilateral kinship, allowing for flexible ties through both maternal and paternal lines.

 

Their religious practices reflect a layered cosmology: while Theravāda Buddhism provides the formal framework for ritual and moral life. These beliefs coexists with animism that is centered on local spirits, ancestral forces, and sacred landscapes. This synthesis maintains a strong continuity with Angkorian-era cosmology, particularly in rituals tied to land, fertility, and protection.

 

Economically, Khmer communities rely largely on wet-rice cultivation, supported by the fertile plains of the region, alongside local crafts that reinforce both subsistence and cultural expression. Linguistically, they retain the Khmer language, distinct from Thai, and culturally they maintain temple traditions, ceremonial practices, and seasonal rituals that echo their deep historical connections to the Angkorian world.

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Kuy

The Kuy represent one of the older Austroasiatic populations of the region, often regarded as pre-Tai inhabitants whose presence predates the rise of both Khmer and Tai dominance in mainland Southeast Asia. Kuy society is similarly village-based, yet historically distinguished by specialized knowledge and skills that set them apart within regional networks.

 

Most notably, they were renowned as expert elephant catchers and trainers, a role that held both economic and symbolic importance. This specialization is closely tied to their religious worldview, which is rooted in animism and characterized by a profound reverence for spirits—particularly those associated with elephants. Elephant spirits occupy a central place in Kuy cosmology, and rituals surrounding them reflect a deep, reciprocal relationship between humans, animals, and the spiritual realm.

 

In contemporary times, while many Kuy have transitioned to wet-rice agriculture as their primary economic activity, elements of their traditional expertise and ritual knowledge continue to persist. Their cultural heritage includes not only these elephant-centered practices but also a distinct language belonging to the Mon-Khmer family, further underscoring their long-standing presence in the region.​