Vietnamese is the world's 19th most-spoken native language with 90 million speakers, a $470 billion economy, and the largest Asian-American refugee community in the US.
Free quote in 10 minVietnamese is a tonal language with six tones, a Latin-based chữ Quốc ngữ alphabet enriched with diacritics, and a regional split between Northern (Hanoi) and Southern (Saigon) phonology and vocabulary that matters enormously for voice-over, dubbing, and consumer marketing. We assign Vietnamese projects by target audience — Vietnam-domestic, US Vietnamese-American (largely Southern variant from the 1975-onwards refugee community), or global diaspora.
From USCIS-accepted Vietnamese refugee documents from the 1975-onwards diaspora to DAV (Drug Administration of Vietnam) pharmaceutical submissions in Hanoi and Section 1557 patient materials for the largest Vietnamese-American community — Day Translations matches every Vietnamese project to a native linguist by region and domain.
USCIS-accepted certified translations for Giấy khai sinh (birth certificates), Giấy chứng nhận kết hôn (marriage certificates), Sổ hộ khẩu (household registry), and refugee documentation from the 1975-onwards Vietnamese-American community. Signed statement of accuracy.
Contracts, court filings, Bộ luật Dân sự (Civil Code) corporate documents, USCIS asylum and family reunification packets, and Vietnamese notarial documents (công chứng). Court-certified interpreters for federal immigration proceedings.
Section 1557 patient materials at sixth-grade reading level, DAV regulatory submissions, clinical trial protocols, and HIPAA-compliant EHR localisation for the 1.5M-strong Vietnamese-American patient population.
Consecutive, simultaneous, OPI, and VRI in Northern and Southern dialects. Court-certified Vietnamese interpreters for federal immigration courts in CA, TX, WA, and federal criminal proceedings.
Website, software, and app localisation. Vietnamese diacritics require proper Unicode rendering; text typically expands 30% vs English. In-country review by linguists in Ho Chi Minh City and Hanoi.
Broadcast-quality subtitling and voice-over in Northern (Hanoi) or Southern (Saigon) dialects. Vietnamese-American media often requests Southern (Saigon) variant; Vietnam-domestic broadcast uses Northern.
Vietnamese is consistently among the top 10 most-requested languages in US federally funded healthcare settings. Vietnamese-Americans — concentrated in Orange County (Westminster, Garden Grove), San Jose, Houston, and Boston — represent the largest Southeast Asian community in the US. Section 1557 of the Affordable Care Act requires qualified Vietnamese interpreters and translated vital documents free of charge to Limited English Proficient patients in any federally funded healthcare program.
Vietnamese medical translation also serves Vietnam's growing pharmaceutical and clinical-research industry. The DAV (Drug Administration of Vietnam) under the Ministry of Health requires Vietnamese-language documentation for marketing authorisation, GMP compliance, and clinical trials. Vietnam has emerged as a regional hub for clinical trial recruitment and contract manufacturing, with English-Vietnamese translation a routine compliance requirement.
Across medical and legal — our specialists have already touched every type you’re likely to send.
Vietnam operates under a civil-law system influenced by French colonial law, Soviet-era socialist legal frameworks, and progressive market-economy reforms since Đổi Mới (1986). The Bộ luật Dân sự (Civil Code) and Bộ luật Hình sự (Penal Code) use civil-law terminology that does not map cleanly to US common-law concepts. Day Translations works with court-certified Vietnamese interpreters across federal districts with significant Vietnamese-American populations — particularly the Central District of California (Orange County), Southern District of Texas (Houston), and Western District of Washington (Seattle).
Requires meaningful language access for LEP individuals in federally funded programs. Vietnamese is among the top 10 most-requested federal interpreter languages, particularly in California and Texas.
Mandates federally certified interpreters in federal courts. Vietnamese court interpretation is heavily requested in immigration courts in CA, TX, WA, and federal criminal proceedings across California's Central District.
Contracts executed in Vietnam must be in Vietnamese to be enforceable. The Bộ luật Dân sự requires Vietnamese-language corporate documentation and registry filings under the Vietnam Investment Law.
Vietnam's Drug Administration (DAV) under the Ministry of Health requires Vietnamese-language documentation for all pharmaceutical and medical-device registrations, GMP audit dossiers, and clinical trial submissions.
Vietnamese is spoken across Vietnam and by a global diaspora of approximately 5 million people, concentrated in the US (Vietnamese-Americans), France (Vietnamese-French from the colonial era), Australia, Canada, and Germany.
Vietnam is one of the fastest-growing economies in the world, with a GDP of $470 billion and a leading position in global manufacturing — Samsung, Intel, LG, Foxconn, and Apple suppliers all operate major Vietnamese production. Vietnam is the United States' largest Southeast Asian trading partner and a key destination for supply-chain diversification away from China. Vietnamese-language localisation is essential for any company operating in Vietnam's manufacturing, retail, fintech, or services sectors.
Vietnamese consumer markets reward dialect-specific localisation. Vietnam-domestic content typically uses Northern (Hanoi) Vietnamese, while Vietnamese-American media defaults to Southern (Saigon) Vietnamese — the variant carried by the 1975-onwards refugee diaspora. Day Translations' localisation team includes in-country reviewers in Ho Chi Minh City and Hanoi, plus Vietnamese-American review for US market content.
USCIS for Vietnamese-American community, federal immigration courts, asylum
Section 1557 patient communication for 1.5M-strong community, DAV submissions
Samsung Vietnam, Intel, Foxconn, Apple suppliers — technical documentation
FPT, VNG, Tiki — software localisation, IT services, ecommerce
SBV regulatory, fintech (MoMo, ZaloPay), VietinBank, VPBank
Shopee Vietnam, Lazada, Tiki, GrabFood, ecommerce localisation
Vietnamese university transcripts, USCIS academic equivalency, F-1/J-1 visas
VTV broadcast, Vietnamese-American community media, Saigon entertainment
We assess target dialect (Northern Hanoi vs Southern Saigon), domain, and audience before assignment.
Vietnamese projects go to native speakers from the target region — Hanoi for Vietnam-domestic, Saigon for Vietnamese-American.
Human translation by domain-specialist linguist with full diacritic and tonal accuracy.
Second native Vietnamese linguist reviews — never the original translator.
Final files with certificate of accuracy, project glossary, and QA report.
“Our hospital serves Orange County's Vietnamese-American community — the largest in the country. Day Translations provides 24/7 Vietnamese medical interpretation in Southern dialect and Section 1557 patient document translation. Our clinical-error reports involving Vietnamese-speaking patients dropped 71% year-over-year.”
“We needed certified Vietnamese translations for 38 family-reunification petitions filed at USCIS — Vietnamese household-registry conventions are notoriously difficult to translate accurately. Every petition was accepted first-pass.”
“Our company operates a major Samsung-supplier facility outside Hanoi. Day Translations handled three years of GMP documentation, employment manuals in Vietnamese, and labour-court filings. The team understood both Vietnamese labour law and Korean-Vietnamese cross-cultural conventions on the ground.”
Real answers — not boilerplate. If you don’t see your question, our team responds in under 60 minutes, 24/7.
Ask a specialistNorthern Vietnamese (Hanoi) is the official standard used in education, broadcast, and government across Vietnam. Southern Vietnamese (Saigon) has distinct phonology — different pronunciation of letters like 'r', 'tr', 'gi', 'd' — and partly different vocabulary for everyday objects. The 1975 fall of Saigon and the subsequent refugee diaspora to the US carried Southern Vietnamese to America, so the 1.5M-strong Vietnamese-American community largely speaks Southern variant. Day Translations assigns Vietnamese projects by target audience — Hanoi for Vietnam-domestic, Saigon for Vietnamese-American media and Section 1557 patient materials.
Vietnamese is a tonal language with six distinct tones (level, falling, rising, dipping-rising, broken-rising, sharply-falling-rising) marked by diacritics on vowels. The Latin-based chữ Quốc ngữ script — codified by Catholic missionaries and adopted nationally in the 20th century — uses extensive diacritics for both vowel quality and tone. Vietnamese is analytical (no inflection) but uses classifier nouns (con, cái, chiếc) that have no English equivalent. Vietnamese text typically expands ~30% compared to English in UI and packaging contexts.
USCIS requires certified English translations of Giấy khai sinh (birth certificates), Giấy chứng nhận kết hôn (marriage certificates), Sổ hộ khẩu (household registry), Sổ đỏ (land use certificates), Vietnamese military service records, police clearance from Bộ Công An, and Vietnamese university transcripts and degrees. Day Translations also handles the specific documentation context for the 1975-onwards Vietnamese-American refugee community — including HO program and family-reunification filings. Typical turnaround 24–48 hours; same-day rush available.
Yes. Section 1557 of the Affordable Care Act and Title VI of the Civil Rights Act both require qualified Vietnamese interpreters and translated vital documents — free of charge — to Limited English Proficient patients in any federally funded healthcare program. Vietnamese is among the top 10 most-requested LEP languages in US healthcare, particularly in Orange County (CA), San Jose, Houston, and the greater Boston area. Family-member interpretation has been ruled non-compliant by HHS OCR.
Orange County, California — particularly the cities of Westminster (home to Little Saigon, the largest Vietnamese community outside Vietnam) and Garden Grove — hosts roughly 200,000+ Vietnamese-Americans. San Jose's Vietnamese community is also substantial (over 100,000). Houston is the largest Vietnamese-American community in Texas; Boston-area Vietnamese-Americans are concentrated in Dorchester and Quincy. Significant communities also exist in Seattle, Atlanta, Philadelphia, and Northern Virginia.
DAV (Drug Administration of Vietnam) is Vietnam's national pharmaceutical and medical-device regulator, operating under the Ministry of Health. DAV requires Vietnamese-language documentation for marketing authorisation, GMP compliance, clinical trial submissions under Decree 54/2017, and post-market pharmacovigilance reporting. Vietnam has progressively harmonised with ICH and ASEAN regulatory frameworks while maintaining country-specific submission templates. DAV submissions require certified Vietnamese translation of source-language dossiers.
Yes — and dialect choice matters. Northern (Hanoi) Vietnamese is standard for Vietnam-domestic broadcast (VTV, HTV), while Southern (Saigon) Vietnamese is preferred for Vietnamese-American community media and US-distributed content for the diaspora. We provide broadcast-quality subtitling (SRT, VTT, SCC), lip-sync dubbing, and voice-over in both dialects. Voice talent matched by age, gender, and regional preference; subtitling follows Netflix and broadcast-network style guides.
Certified USCIS translations of single-page Vietnamese civil documents are delivered in 24–48 hours; rush same-day available for asylum and removal proceedings. Standard Vietnamese translation up to 5,000 words runs 2–5 business days under full ISO 17100 workflow. DAV regulatory packages take 5–10 business days depending on dossier scope. Vietnamese localisation projects typically scope 2–4 weeks for an initial release, with continuous-localisation cycles for subsequent product sprints.
Get a free quote in under 60 minutes. ISO 17100 certified. Available 24/7. Native Northern and Southern Vietnamese linguists.
