日本出生BB係香港定居改名問題

I will suggest you not to do so.

It is not the problem with HKSAR Government but Japanese Government.

1. Japanese residence system is complicated. By changing to your last name, will that affect his residence or not? Difficult to say.

2. When your son only changes his name in Hong Kong only, this will create another issue - two different identities for the same person.

For example, when your son go to Japan, he will definitely use his Japanese Passport to return (as usually this is the law). But when he leaves, how can he check-in with airline by using different name (the ticket is obviously issued by his Hong Kong's name. But HKSAR Passport does not have an immigration stamp).

2012-08-03 13:24:39 補充：
It does not matter.

The issue is if you change name, how can you convince the airline staff your son does not have a passport stamp inside his Japanese Passport, while you have nothing to prove the child’s real identity (Remember – anything you have will be showing “another” person).

2012-08-03 13:25:50 補充：
You are basically making the issue more complicated.

Also – ask your wife to read this:

http://www.hk.emb-japan.go.jp/jp/docs/ryoken.pdf

Your son's residence in Japan will impact the renewal as well.

2012-08-03 13:27:08 補充：
What you should really do is - see if you can add alias name for your son.

In that case - both name can co-exist in the same document.

Don't "CHANGE" name.

By the way - no offense - a Japanese Passport is more valuable than a HKSAR Passport.

你們應往灣仔人民入境事務處總部查詢及辦理居留手續，BB尚細沒有申份證，可能會跟父母出一份證件，而太太會發申份證，但要住滿7年才有3粒星，即香港永久性居民！