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Cambodia Visa for Australian Dual Citizens: 2026 Same-Passport-Rule Guide
Australian dual citizens have one rule above all others for Cambodia — pick a passport, apply on it, enter on it, exit on it. The 2026 specialist guide for AU+UK, AU+India, AU+Vietnam, AU+China, AU+NZ, and AU+Philippines duals.
Which passport should an Australian dual citizen use to enter Cambodia?
Pick ONE passport for the whole trip and stick with it. Cambodian Immigration scans the same passport at entry and at exit — switching mid-trip causes problems every single time. For most AU duals (AU+UK, AU+India, AU+Vietnam, AU+China, AU+NZ), the Australian passport is the easier choice because the eVisa for Aussies is one of the simplest in SE Asia ($80 USD / ~$122 AUD all-in Tourist, 3 business days). But if your other passport offers visa-free entry or a cheaper visa fee, that's a legitimate alternative — just apply on it, and DON'T pull out the AU passport at the border.
ประเด็นสำคัญ
- Pick ONE passport for the whole Cambodia trip and stick with it — Cambodian Immigration scans the same passport at entry and at exit. Switching mid-trip causes problems every single time.
- For most Aussie duals (AU+UK, AU+India, AU+NZ, AU+China), the Australian passport is the easier path — eVisa is $80 USD (~$122 AUD) all-in Tourist, 3 business days, no flight or hotel proof required.
- AU+Vietnam duals: the Vietnamese passport CANNOT use the Cambodia eVisa portal. Vietnamese nationals need the embassy route, so use your Australian passport instead.
- The eVisa is bonded to the passport number on the application. If you enter on one passport and try to exit on the other, the airline gate spots the missing entry record and you do not board.
- Cambodia recognises dual citizenship and does not ask about your other nationalities on the application — but DFAT records your AU exit on whichever passport you departed on, which can matter on the way home.
Cambodia is one of the friendliest dual-citizen destinations — if you pick a passport upfront
Cambodia is genuinely one of the most relaxed Southeast Asian countries when it comes to dual citizenship. Cambodian Immigration does not ask whether you hold a second nationality, the eVisa application form has no dropdown for it, and the country's constitution recognises dual nationality for its own citizens. There is nothing adversarial about being an Aussie dual at the Phnom Penh or Siem Reap gate — provided you stick to one passport for the whole trip. The broader Australia country pillar covers the standard-case eVisa for Aussies.
The failure mode is not Cambodian policy. It is the mechanical reality that the entry stamp, the eVisa record, and the exit stamp all live on the same passport number. Aussie duals who try to be clever — entering on the Australian passport because the eVisa was easier, then exiting on the British or Vietnamese one because the next flight is cheaper — find out at the departure gate that the airline's system has no record of them entering Cambodia on that second passport. The plane leaves without them.
This post catalogues the six common AU dual-citizen pairs — AU+UK, AU+India, AU+Vietnam, AU+China (PRC), AU+New Zealand, and AU+Philippines — with practical guidance for each. Single-passport Aussies should start with the Do Australians Need a Cambodia Visa guide instead. If you are a permanent resident on a foreign passport rather than a dual citizen, the Australian Permanent Residents guide picks up that thread.
The same-passport rule and the six common AU dual pairs
The rule is one sentence long. Pick the passport you will enter Cambodia with, apply for the visa on that passport's number, and present that same passport when you leave. Everything else in this article is consequences of that sentence — which passport is easier for each pair, what happens if you ignore the rule, what to show at the AU re-entry gate on the way home.
The table below covers the six AU dual-citizen pairs our desk sees most weeks. The 'easier choice' column reflects which passport tends to give the simplest end-to-end Cambodia trip, not which one is mandatory. You can legitimately use either passport you hold — just commit to one before you apply.
คำถามที่พบบ่อย
Can I use either passport to enter Cambodia if I am a dual citizen?
Yes, but only one of them per trip. Cambodian Immigration scans the same passport at entry and at exit, and the eVisa is bonded to the passport number on the application. Pick which passport you will enter on, apply for the visa on that passport, and use it for both the entry stamp and the exit stamp. Switching mid-trip causes problems at the airline gate every single time — TIMATIC sees no matching entry record on the second passport and the boarding pass is declined.
What if I have Vietnamese AND Australian citizenship — which passport for Cambodia?
Use the Australian passport. The Vietnamese passport is not eligible for the Cambodia eVisa in 2026 — Vietnam is not on Cambodia's eVisa-eligible country list. Vietnamese nationals must apply through the Royal Embassy of Cambodia in Hanoi or Ho Chi Minh City, with physical documents and a 5-7 business day timeline. The Australian eVisa is $80 USD (~$122 AUD) all-in Tourist, 3 business days, and applies online from anywhere. AU+Vietnam duals almost always use the Australian passport for the Cambodia leg.
Do I need to declare my dual citizenship when applying for the Cambodia eVisa?
No. The Cambodia eVisa application form does not ask about second citizenships, and Cambodian Immigration does not collect that information. You declare one nationality — the one on the passport you are applying with — and the rest of your citizenship picture is not Cambodia's concern. Cambodia's constitution recognises dual nationality for its own citizens, and it does not interrogate the status of foreign duals.
What if I entered Cambodia on my UK passport but want to exit on my Australian one?
Don't. Cambodian Immigration's exit scanner will not find a matching entry record on the Australian passport, and the airline check-in counter will flag it via TIMATIC before you reach the gate. You will not board. Use the passport you entered Cambodia on for the entire Cambodia leg — including the exit stamp. If you have already entered on the UK passport, exit on it too. The Edge Cases for Australians guide covers what to do if the discrepancy has already happened.
Can my child travel on a different passport than mine?
Yes — Cambodia treats each passport as a separate visa application, and there is no requirement for family members to all use the same nationality. Each child needs their own Cambodia eVisa under their own passport, with their own photo and their own fee. That said, if it is practical, having all family members on passports of the same nationality (typically Australian) for the same trip simplifies the AU departure and re-entry side and keeps the family record consistent.
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