アメリカ人向けカンボジアパスポート必要事項：有効期限と余白ページの解説

Blank pages — how many you actually need

Cambodia requires at least one full blank page in your passport for the entry stamp. Not a half page, not the corner of a page already carrying a Thai or Vietnamese stamp — one clean page the officer can ink without crowding another country. For most Americans with a standard 28-page passport book and a few trips behind them, this is a non-issue. For frequent travelers, it is worth ten seconds of checking before you apply.

Open your passport to the visa pages — the ones after the photo page, headed for stamps and visas — and flip through. You are looking for at least one page with no stamps, no stickers, and no visas on either side that would crowd the new stamp. Cambodian Immigration stamps on a clean spread, so a page that is half-used on the back counts as used. If you are down to scattered gaps and edge slivers, you are effectively out of pages.

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

Two passport conditions cause more last-minute scrambles for Americans than expiry or pages combined: physical damage, and a name that no longer matches across documents. Both are fixable, but only if you catch them before you apply, because your eVisa locks to the passport you submit.

Damaged passports

A passport with water damage, a torn or detached cover, a bent or delaminated photo page, or pages coming loose can be refused by either your airline or Cambodian Immigration — even if the dates and pages are fine. Normal wear is accepted; a soft cover and a few dog-eared corners will not stop you. Significant damage will. If the machine-readable zone at the bottom of your photo page is scuffed, smeared, or peeling, that is the part scanners read, and damage there is the most likely to cause a problem. When in doubt, renew — a damaged passport is treated as invalid, not as a lesser version of valid.

Name changes after marriage or court order

The name on your eVisa application must match your current passport exactly — character for character, including middle names and any hyphenation. If you married and changed your name but your passport still shows your maiden name, apply in the name on the passport. If you have already updated your passport, apply in the new name and travel on the new book. Do not mix the two, and do not apply in a name that matches your driver license but not your passport. The eVisa is checked against the passport, not against any other ID.

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

If your passport fails any of the checks above, renew it before you apply for your eVisa — not after, and not in parallel. The order matters because the eVisa attaches to the passport number you submit, and a brand-new passport carries a brand-new number. Renew, receive the new book, then apply on the new details.

In 2026, standard US passport renewal runs about 4 to 6 weeks once the application is received, with expedited service at roughly 2 to 3 weeks for an added fee. Online renewal is available for many eligible adults, which can shave processing time, but the realistic planning number is still weeks, not days. If you have a trip within a couple of months and a passport that needs work, treat the renewal as the long pole and book travel around it.

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 3–5 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

すべてチェックして30秒もかかりません。パスポートの写真ページを開き、有効期限を確認してください——カンボジアへの入国予定日から最低6ヶ月以上ありますか？ビザページをめくって——少なくとも1ページは完全に空いていますか？本体を見て——水濡れ、表紙の緩み、写真ページ下部の擦り傷はありますか？名前を確認して——eVisaに入力する名前と完全に一致していますか？4つすべてが「はい」なら、このパスポートでの申請の準備が整っています。

どれか一つでも「いいえ」なら、対処は同じです：まず更新してから、新しいパスポートで申請してください。これは最もストレスの多い状況を防止する唯一のアドバイスです——使用できなくなったパスポートに紐づけられた有料eVisaを空港で発見することです。適格性と入国に関するその他のすべてについては、上記のリンク先の適格性概要と完全なビザハブが次の2つの訪れる場所です。

アメリカ人向けの次のステップと関連ガイド：パスポートのチェックが完了したらカンボジアeVisaを申請し、有効期限の詳細については米国パスポート6ヶ月ルールガイドを読み、開始する前に米国市民ビザ要件チェックリストで完全な書類セットを確認してください。