Cambodia eVisa for Dual Citizens: Which Passport Should Americans Use?
If you hold two passports, the Cambodia eVisa rule is simple: apply on the exact passport you will physically hand the airline and Cambodian Immigration, and use that same passport for entry, the e-Arrival Card, and exit. Mixing passports is the single most avoidable reason dual-national Americans get bounced at the gate.
Which passport should a dual citizen use for the Cambodia eVisa?
Apply for the Cambodia eVisa on the exact passport you will physically present to the airline and to Cambodian Immigration — and use that same passport for entry, the e-Arrival Card, and exit. The eVisa is electronically linked to the passport number you applied with, so the passport you hand over at the gate must be the same one. For most dual-national Americans, the US passport is the simplest choice: it usually has the longest validity, the airline expects it, and US citizens face no special Cambodia entry barrier. Whichever you choose, do not switch passports mid-trip — that mismatch is the most common avoidable reason dual nationals get stopped at the gate.
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- Pick one passport and commit to it: apply for the Cambodia eVisa on the exact passport you will show the airline and Cambodian Immigration, then use that same passport for entry, the e-Arrival Card, and exit.
- The eVisa is electronically tied to the passport number you applied with — if the passport you present at the gate has a different number, the eVisa does not match and you can be turned back.
- For most dual-national Americans, the US passport is the cleaner choice: it almost always has the longest validity, the airline expects it, and US citizens face no extra Cambodia entry hurdle.
- Cambodia reads your nationality from the passport you apply on, not from your other citizenship — your second nationality has no bearing on eligibility, fee, or stay.
- The Cambodia e-Arrival Card is a separate, mandatory step for every air arrival: $5 USD verified through us, 14 fields, submitted within 7 days before you fly — and it must name the same passport as your eVisa.
The rule in one line: one passport, start to finish
If you are an American who also holds a second passport — US and Ireland, US and Mexico, US and the Philippines, US and India, whatever the pairing — the Cambodia eVisa question feels more complicated than it is. There is one rule, and it covers every case: pick the passport you will physically present at the airport, apply for the eVisa on that exact passport, and then use that same passport for everything — boarding, the e-Arrival Card, the entry stamp, and the exit stamp.
Cambodia does not care that you hold a second nationality. The eVisa system reads exactly one passport: the one whose details you typed into the application. It does not see your other citizenship, it does not blend the two, and it does not give you options at the gate. The single thing that matters is that the passport in your hand when you land is the same passport your eVisa is built on. Get that right and dual citizenship is a non-issue. Get it wrong — apply on one passport, travel on the other — and you have manufactured a mismatch that Cambodian Immigration is fully entitled to turn back.
This guide walks through how to choose between your two passports, why the US passport is usually the cleaner pick, the trap of switching passports between entry and exit, and the name and validity details that catch dual nationals out. If you also want the broader picture of whether your second nationality changes anything, our explainer on whether dual citizens need a Cambodia visa covers the eligibility side, and the Cambodia visa hub for US citizens pulls cost, documents, and processing into one place. When you have chosen your passport, you can apply on it directly.
Why the passport number is the whole game
The reason there is only one rule comes down to how the eVisa is stored. When your Cambodia eVisa is approved, it is electronically bound to the passport number, nationality, and name you entered on the application. The PDF you print is just a human-readable copy of a record that, on the Cambodian side, points at one specific document. There is no field for "and also this other passport." The visa exists for the passport you applied on, and only that one.
That has a hard consequence at the gate. When you board, the airline checks that you hold a valid Cambodia eVisa for the passport you are traveling on. When you land, Cambodian Immigration scans the passport you present and matches it against the eVisa record. If the passport number, nationality, or name does not line up with what is on file, the eVisa does not resolve — and an officer can refuse entry until it is sorted, which for a single-entry visa with a printed PDF is not a quick fix at a busy arrivals hall.
よくある質問
Which passport should a dual citizen use for the Cambodia eVisa?
The exact passport you will present to the airline and to Cambodian Immigration. Apply for the eVisa on that passport, then use the same one for the e-Arrival Card, boarding, entry, and exit. For most dual-national Americans the US passport is the cleaner pick — usually the longest validity, what the airline expects, and the document you need to re-enter the US — but the second passport is fine as long as it is the only one you use the whole trip.
Can I apply on my US passport and enter Cambodia on my other passport?
No. The eVisa is electronically tied to the passport number you applied with. If you board or arrive on a different passport, the number does not match the eVisa record, and the airline can deny boarding or Cambodian Immigration can refuse entry. Apply on, and travel on, the same passport from start to finish.
Does Cambodia care that I hold two citizenships?
No. Cambodia reads only the passport you applied on — its number, nationality, and name. Your second citizenship is invisible to the eVisa system and has no effect on your eligibility, the $80 Tourist or $90 Business fee, or your 30-day single-entry stay. You do not declare the second nationality and it gives you no advantage or disadvantage at entry.
My two passports spell my name differently. Which spelling do I use?
Use the spelling exactly as it appears on the single passport you have chosen to travel on, matching its machine-readable zone character-for-character. Do not blend the names from your two passports. Because you will only present the chosen passport at every checkpoint, the differently-spelled name in your other passport never comes into play.
What happens if I leave Cambodia on a different passport than I entered on?
Your entry stamp is in the passport you arrived on, so the exit officer who is handed a different passport finds no Cambodia entry record in it — which reads as an unrecorded entry and can cause real delay. Always exit on the same passport you entered on. The simplest safeguard is to keep your second passport in your bag the entire trip and only ever present your chosen travel passport.
Does my e-Arrival Card need to match the passport on my eVisa?
Yes. The e-Arrival Card asks for passport details, and they must match your eVisa exactly. If your eVisa is on your US passport, the card uses the same US passport number, nationality, and name. A card filed under your other passport mismatches the visa at the kiosk. It is $5 USD verified through us, 14 fields, submitted within 7 days before you fly.
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Cost & Pricing
Cambodia e-Arrival Card Fee Explained for Americans
The Cambodia e-Arrival Card is a separate step from your eVisa, and a small one — $5 USD verified through us, 14 fields, filed within 7 days before you fly. Here is exactly what that fee covers, why it is not bundled into your visa price, and the timing that keeps you moving at the gate.
Application Process
Cambodia e-Arrival Card: How US Citizens Fill It Out Before Arrival
The Cambodia e-Arrival Card is 14 fields across three sections, filed within 7 days before you land. Here is exactly what each field wants, in the order the form asks for it, plus the date-format slip that flags US travelers at the kiosk.
Documents Checklist
What Information You Need for the Cambodia e-Arrival Card (14 Fields, Step by Step)
The Cambodia e-Arrival Card asks for 14 pieces of information across three sections — your identity, your flight and stay, and a short customs declaration. Here is exactly what each field wants and the four things to have in front of you before you start.
