To change your name in Aadhaar card, you typically need to visit an Aadhaar Seva Kendra, as Aadhaar card name change online is generally not supported for major changes. You'll submit a name update form, along with a fee and necessary identity proofs. For significant changes, like a full name alteration, a gazette notification for Aadhaar name change is mandatory to legally validate your new name. This entire Aadhaar name change process usually takes up to 90 days.