Cambodia Passport Requirements for Americans: Validity and Blank Pages Explained

The two passport rules that actually decide your trip

This guide covers exactly how the 6-month window is counted, how many blank pages you really need, what happens if your passport is damaged or recently renamed, and how renewal timing fits around your eVisa. For the bigger picture on whether you need a visa at all, start with our overview of whether US citizens need a visa for Cambodia, then come back here for the passport specifics. The full Cambodia visa for United States citizens hub ties the cost, documents, and timing together in one place.

The 6-month validity rule, counted correctly

If your passport is sitting right on the edge of the window, do not gamble on a sympathetic gate agent — there is no discretion built into the system. Renew first. We break the timing down in detail in our guide to the US passport 6-month rule for Cambodia, and the broader Cambodia visa requirements for US citizens checklist shows how the passport rule sits alongside the other entry conditions.

Blank pages — how many you actually need

A quick reality check on the standard US passport: the regular book has 28 pages, of which around 17 are usable visa pages once you set aside the cover, signature, and endorsement pages. The 52-page book — what the State Department now issues by default in many cases, and which you can request at no extra cost — gives you far more runway. If you travel often and you are renewing anyway, opt for the larger book and you will not think about pages again for years. To see how the blank-page rule sits alongside everything else you need, the Cambodia visa requirements for US citizens checklist walks through exactly what counts as a clean page.

Damaged passports, name changes, and the eVisa match

Damaged passports

Name changes after marriage or court order

The unifying rule behind both edge cases: your eVisa is tied to the exact passport number you enter on the application. If you renew after applying — even for the same person, same name — the old eVisa is attached to a passport you are no longer carrying, and that mismatch can stop you at the gate. So renew first, then apply on the new passport number. The same principle drives every item on our Cambodia eVisa documents checklist for Americans, where the passport scan has to match the data you type.

Renewal timing — fitting it around your eVisa

Once your passport clears all five checks — six months of validity, a clean page, sound condition, the right name, and a number you will keep — the eVisa itself is the easy part. It is approved in 3 business days and delivered as a printable PDF by email, with US-timezone support if anything needs a second look. You can start your Cambodia eVisa application as soon as your passport is squared away, and there is free resubmission if Immigration flags a correction.

Before you apply: the 30-second passport check

Next steps and related reading for Americans: apply for your Cambodia eVisa once your passport clears the check, read the US passport 6-month rule guide for the validity detail, and confirm your full document set with the US citizen visa requirements checklist before you start.