Chinese

 

Migrants from China were by far the largest community. often fleeing economic hardship, political upheaval, or conflicts such as the Taiping Rebellion. The Teochew people from the Chaoshan region emerged as the dominant group, settling in Yaowarat (Chinatown) and Talat Noi. As the largest dialect group, they became the "titans" of Thai banking and shipping, with the Teochew language becoming the lingua franca of the Thai-Chinese community and a major contributor to modern Thai culinary and kinship vocabulary.

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Parallel to this, the Cantonese from the Pearl River Delta settled around Charoen Krung and Bang Rak, where their technical prowess as master builders and engineers was instrumental in constructing Bangkok’s first paved roads and infrastructure. Meanwhile, the Hainanese community carved out a distinct niche along the Samsen riverfront, revolutionizing Thai hospitality and casual dining—most notably by introducing Khao Man Gai (Hainanese Chicken Rice)—and dominating the riverside timber industry.

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The Hakka people, arriving from the mountainous regions of Guangdong and Fujian, established specialized artisan enclaves in Suan Luang and Plapphla Chai, where they became renowned for their mastery in leatherwork, tailoring, and shoe-making. Finally, a later wave of Hokkien migrants arrived via Singapore and Penang, settling in the historic Talat Noi district. Unlike their aristocratic predecessors from the Ayutthaya period, these newcomers focused on international shipping and tin mining, leaving behind architectural legacies like the So Heng Tai Mansion, a rare Hokkien-style courtyard house that still stands as a testament to their enduring influence in the heart of modern Bangkok.

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Vietnamese

The Vietnamese community consisted mainly of migrants from central and southern Vietnam, many of whom arrived as refugees fleeing political conflict. They were concentrated along riverfront areas and were employed in labor-intensive occupations such as manual labor, riverine trade, farming along the Chao Phraya River, and domestic service. Some Vietnamese migrants also served in royal projects or as palace laborers. Religiously, they practiced a mix of Buddhism, ancestor worship, and Confucian traditions, and they preserved certain Vietnamese festivals that became localized in Bangkok.

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Indians

Driven by the British Empire’s expansion and the opening of Thailand's economy, these migrants arrived primarily from Northern and Western India, as well as the coastal regions of the South. The most prominent group to arrive during this period were the Punjabis, both Sikhs and Hindus. They dominated the textile and garment trade, importing fabrics from across the British Empire. Today, Phahurat is known as "Little India," and its skyline is defined by the Gurdwara Siri Guru Singh Sabha, one of the largest Sikh temples outside of India. The Punjabi community remains the backbone of Thailand’s multi-billion dollar textile industry, with many families expanding into real estate and hospitality.

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While South Indians had been in Thailand since the Ayutthaya period, a 19th-century wave of Tamil Muslims and Chettiars (a banking caste) arrived to facilitate trade between Bangkok, Singapore, and Penang. They settled primarily in the Silom and Bang Rak districts. The Tamils were instrumental in the gemstone and jewelry trade, a niche they still hold today in the jewelry district of Mahesak. The most enduring symbol of this community is the Sri Maha Mariamman Temple (Wat Khaek) on Silom Road, which has become a major spiritual landmark for both the Indian community and Thai devotees.

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The Gujaratis, many of whom were Dawoodi Bohras (a Shia Muslim sect), arrived from Western India and established themselves as high-end international merchants. They specialized in "luxury" commodities of the era: precious gems, high-quality spices, and intricate glassware. Unlike the labor-intensive trades of other groups, the Gujaratis often acted as intermediaries between the Thai court and European trading houses. Their historic presence is concentrated in the Talat Noi and Si Phraya areas, where several century-old Gujarati trading firms continue to operate out of unassuming shophouses near the river.

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A smaller but culturally significant group arrived from Gorakhpur and eastern Uttar Pradesh. These migrants found a unique niche that others had ignored: dairy farming and newspaper delivery. For decades, the "milkman" in Bangkok was almost synonymous with this specific Indian community. They settled in the leafy outskirts of what was then the city center, such as Sathorn and Lumphini, maintaining small herds of cattle. While the cows are long gone, many of these families transitioned into professional sectors, though their traditional sweets (Mithai) shops can still be found in the alleys of the Ban Oou community.