There are several ways to find your Aadhaar number (also known as your UID or Unique Identity Number) if you have lost or forgotten it:

1. Check your Aadhaar card: Your Aadhaar number is printed on the front of your Aadhaar card, along with your photograph and other personal information.
2. Search for your Aadhaar number online: You can visit the UIDAI website and search for your Aadhaar number by entering your name, date of birth, and other relevant information.
3. Visit an Aadhaar Enrollment Center: If you have lost your Aadhaar card, you can visit an Aadhaar Enrollment Center and request a copy of your Aadhaar number. You will need to provide proof of identity, such as a passport or driving license.
4. Retrieve your Aadhaar number using your mobile number: You can visit the UIDAI website and enter your mobile number to retrieve your Aadhaar number.
5. Contact UIDAI’s customer service: If you are unable to find your Aadhaar number using the methods above, you can contact UIDAI’s customer service by visiting the UIDAI website or by calling the toll-free number 1947.

Please note that you may need to provide additional information or documentation to verify your identity when attempting to retrieve your Aadhaar number.

Without aadhaar Indian resident citizens can not apply for PAN Card from 01–07–2017 onwards