How do I replace my lost or stolen SIN card?
To apply for a replacement Social Insurance Number (SIN) card, please see How do I apply for a SIN?
If you suspect that someone is using your Social Insurance Number (SIN), please see What should I do if I suspect someone is using my SIN?
What should I do if I don't remember my SIN? number
If you don't remember your SIN number, you can refer to your income tax return where your SIN number can be found.
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