You can create your User ID and Password by either using your ATM card or Credit Card number via the following ways:

Register via Citibank Online
Visit www.citibank.com.hk via computer, click on “First time user?”-> “ Register Now” from the menu on the left.

Register via Citi Mobile^® App
After downloading the Citi Mobile^® App, open the App and tap “Register” to start the registration.

Once the User ID and password is created successfully, you can log on to both Citibank Online and Citi Mobile^® App with the same User ID and password.

For Citi ATM card Users
The "Card Number" refers to the 16-digit number printed on the front of your Citibank ATM card.

For Credit Card Users
The "Card Number" refers to the 16-digit number printed on the front of your Credit Card.

For Citibank Cash Back American Express^® Card Users
The "Card Number" refers to the 15-digit number printed on the front of your Credit Card.

CVV2 is the 3 digit number to the right of the signature strip on the back of your credit card.

3CSC is the last 3 digits printed on the back of your Citibank Cash Back American Express^® Card.

You may reset the ATM PIN in your Citi Mobile^® App, call our Internet Hotline (852) 2860 0380 or visit one of our branches and request our Personal Banker to help reset your ATM PIN with you.

Please contact our Internet Hotline (852) 2860 0380 to make sure your mobile number registered with the bank is up to date.

Your chosen User ID would be rejected in one of the following cases:

1. Your User ID has been chosen by another user; OR

2. Your User ID has violated the rules of setting up User ID:

• - Your User ID contains any character which is NOT an alphabet, NOT a numeric and NOT one of the 3 designated special characters (. @ _ )
• - Your User ID contains your Card Number
• - Your User ID does not contain any alphabet
• - Your User ID does not contain any numeric
• - Your User ID contains less than 6 characters or more than 50 characters
• - Your User ID contains 3 or more consecutive characters (e.g. "aaa101", "user999", "abbb10")
• - Your User ID contains 3 or more consecutive sequential characters (e.g. "abc007", "user123", "xx789xx")

Your chosen Password would be rejected in one of the following cases:

1. Your new Password is the same as your old Password; OR

2. Your Password has violated the rules of setting up Password:

• - Your Password contains any character which is NOT an alphabet, NOT a numeric and NOT one of the designated special characters (- _ * & . : $ ! # / + =)
• - Your Password contains leading or trailing blank
• - Your Password contains your Card Number
• - Your Password is the same as your User ID
• - Your Password does not contain any alphabet
• - Your Password does not contain any numeric
• - Your Password contains less than 6 or more than 50 characters
• -Your Password contains 3 or more consecutive identical characters (e.g. "aaa101", "pwd999", "abbb10")
• -Your Password contains 3 or more consecutive sequential characters (e.g. "abc007", "pwd123", "xx789xx")

Yes. Go to Profile & Settings > Personal Information > Update my profile > Change Password / Change User ID to change your User ID or Password.

We recommend you to reset your password to ensure that is a correct or a valid password to log on. To reset your password, simply click on 'Forgot User ID/Password’ and follow the steps.

Your user ID may be temporarily suspended. Please click on 'Forgot User ID/Password’ on the login screen, input required information and login again upon successful authentication of a One-Time Password.