Your Marriott Member Number is a unique ID that tracks your stays and points in the Marriott Bonvoy loyalty program
When you join Marriott Bonvoy, you receive a member number — a string of digits that identifies your account across all Marriott properties worldwide. This number is how the hotel chain connects your reservations, your nights stayed, your points earned, and your elite status together in one place. You'll use it when you book a room, check in at the front desk, or log into your account online.
Your member number appears on your membership card, in your email confirmation, and in your online account dashboard. It's separate from your credit card number if you hold a Marriott credit card — the card is just one way to earn points toward your membership account.
Key Takeaways
- Your Marriott member number is printed on your membership card and shown in your online account; you'll need it to earn points on every stay.
- You can find your number by logging into Marriott.com, checking your membership card, or looking at any hotel confirmation email.
- Linking your member number to a Marriott credit card ensures points post to your account even if you pay with a different method.
- Your member number stays the same for life unless you close your account; you do not need a new number when you reach elite status.
- If you lose or forget your number, Marriott can look it up using your email address or phone number associated with the account.
Where to find your member number
The fastest way is to log into your Marriott Bonvoy account at Marriott.com. Once you're signed in, your member number appears at the top of your account dashboard, usually next to your name. You can also find it on your membership card if you requested a physical one when you joined.
If you've already made a reservation, check your confirmation email — your member number is listed there. When you check into a hotel, the front desk can also confirm your number and show it to you on their screen.
How your member number connects to a Marriott credit card
A Marriott credit card is linked to your member number, not the other way around. When you explore for a Marriott card, you either use an existing member number or create a new account during the process. The card itself has its own number (the 16-digit card number), but behind the scenes, every purchase you make with that card sends points to the member account tied to it.
If you already had a member number before getting the card, make sure the card is linked to that same number. You can verify this in your online account under "Payment Methods" or "Linked Cards." If you have multiple Marriott cards or accounts, linking them incorrectly means points go to the wrong place.
What happens to your member number when you reach elite status
Your member number never changes when you earn elite status — whether you reach Silver, Gold, Platinum, or higher tiers. The number stays the same for the life of your account. What changes is the status badge next to your name and the perks attached to your account, but the underlying ID number remains constant.
This matters because you don't need to update anything with your credit card company, hotel reservations, or other linked services when you move up in status. The same member number that earned you Silver Elite will still work when you become Platinum Elite.
Using your member number for reservations and check-in
When you book a room at any Marriott property, you can enter your member number during the reservation process. Providing it ensures the stay counts toward your nights and points. At check-in, give your member number to the front desk along with your ID — they'll pull up your reservation and your account status in seconds.
If you forget to provide your number when booking, you can still add it at check-in. The hotel can usually backdate the points and nights to your account, though it's faster and safer to include it upfront. If you're checking in without a reservation (a walk-in), you can still provide your member number and earn points on that stay.
What to do if you forget or lose your member number
You don't need to panic — your number is tied to your email address and phone number. Go to Marriott.com and use the "Forgot Your Member Number?" link on the login page. Enter your email address, and Marriott will send your number to that email within minutes.
Alternatively, call Marriott Bonvoy customer service at the number on their website. They can look up your account using your email, phone number, or full name and address. Once you have it again, write it down or save it in your phone so you have it for your next stay.
Protecting your member number and account
Your member number itself is not sensitive information — it's printed on cards and shown in emails. However, your account password and login credentials are sensitive. Use a strong, unique password for your Marriott account and change it periodically. Don't share your password with anyone, even if they claim to be from Marriott.
If you suspect someone has accessed your account without permission, log in and change your password when ready. You can also check your account activity to see recent stays and points transactions. If you see activity you don't recognize, contact Marriott customer service to report it.
Frequently Asked Questions
Can I have more than one member number?
Technically yes, but Marriott discourages it. If you have multiple accounts, your points and nights are split across them, which slows your progress toward elite status. If you've accidentally created two accounts, contact Marriott to merge them into one.
What if my member number is on a Marriott credit card I no longer use?
Your member number is separate from the card. You can keep using the number even after the card expires or you close it. If you get a new Marriott card later, you can link it to the same member number so points continue going to the same account.
Do I need a new member number if I move to a different country?
No. Your member number works at Marriott properties in every country. You don't need to create a new account or get a new number based on where you live or travel.
Can I transfer my member number to someone else?
No. Member numbers are personal and non-transferable. If someone else wants to earn Marriott points, they need to create their own account and get their own member number.
How long does it take to receive a physical membership card with my number?
Marriott typically mails physical cards within 7 to 10 business days of account creation, though timing varies. You don't need the physical card to start earning points — your number is active when ready in your online account.