Can you open a Zerodha account online without Aadhaar linked to a mobile number?

No, you cannot open a Zerodha account online if your Aadhaar is not linked to a mobile number. You can open your account offline by following the process detailed in How to open a Zerodha account offline?

To enable online account opening, you must first link your mobile number to your Aadhaar by visiting the nearest Aadhaar Seva Kendra. You can locate the closest center by visiting uidai.gov.in.