My grandfather was born in Canada — can I get citizenship?

Yes, in most cases. If your grandfather was born in Canada, and the chain of citizenship from him down to you was never broken, you are very likely already a Canadian citizen — not "eligible to apply," but already a citizen, whether you knew it or not. What's left is proving it with a Citizenship Certificate.

This surprises a lot of people, because for years the rule was different. Here's what changed, whether you qualify, and what proving it actually involves.

Why this is now a "yes" for most grandchildren

Until December 15, 2025, Canada capped citizenship by descent at one generation born abroad. If your grandfather was Canadian-born but your parent was born outside Canada, your parent was a citizen — but you, born abroad to that already-once-removed parent, generally were not. The chain stopped at your parent's generation.

Bill C-3 — An Act to amend the Citizenship Act (2025), S.C. 2025, c. 5 — removed that cap. It came into force December 15, 2025, and it applies retroactively: if you were born before that date and the facts fit, you were a citizen from the moment you were born, not from whenever the law changed. Nobody has to grant it to you. Nobody administers an oath. You're not naturalizing — you're asking the government to issue a certificate that proves a citizenship you already hold under section 3 of the Citizenship Act.

For the full backstory on why the law changed, see Bill C-3 explained.

The test, in plain terms

You almost certainly qualify if:

• You were born outside Canada
• Your parent was also born outside Canada
• Your parent's parent — your grandparent — was born in Canada
• All of this happened before December 15, 2025

Each link in that chain matters. Citizenship passes from a Canadian citizen to their child at the moment of that child's birth. Your grandfather was a citizen at your parent's birth (because he was born in Canada). Your parent was a citizen at your birth (because they inherited it from your grandfather). That's the whole chain — two links, both intact.

It doesn't matter whether your grandfather is still alive, whether he ever lived in Canada as an adult, or whether he moved away as a baby. Birth in Canada is what matters, not residence.

It also doesn't matter whether it's your grandfather or grandmother — the law is gender-neutral. If your grandmother was the one born in Canada, the same analysis applies.

What would break the chain

A few things can interrupt this, and it's worth checking for them honestly before you assume you're covered:

• Renunciation. If your grandfather or parent formally renounced Canadian citizenship before the next generation was born, the chain stops there.
• Older loss-of-citizenship rules. Before 1977, there were ways a Canadian could lose citizenship automatically (for example, certain foreign naturalizations) that don't apply today. If that happened somewhere in your line, it can affect the analysis.
• Births before 1947. Canadian citizenship as a legal status didn't exist until 1947 — before that, people born in Canada were British subjects. If your grandfather (or a more distant ancestor in a longer chain) was born before 1947, the analysis gets more involved and usually benefits from a second opinion.

If none of these apply, you're in the straightforward case, and it's the one arryv handles every day.

What proves the chain

Proving this claim to IRCC comes down to documents, not tests or interviews. For a grandparent-anchored chain, you typically need:

• Your birth certificate, showing your parents' names.
• Your parent's birth certificate, showing their parents' names — including your Canadian-born grandparent.
• Your grandparent's long-form Canadian birth certificate, issued by the province where they were born. This is the anchor document for the whole application.
• Marriage certificates anywhere a name changed between generations, so the officer can connect, say, "Margaret O'Sullivan" on one certificate to "Margaret Smith" on another.

If your grandparent's long-form birth certificate isn't already in a family file somewhere, ordering it is usually the first real step. Our guide to ordering a long-form birth certificate in Canada walks through how, province by province.

Everything gets submitted on CIT 0001, the Application for a Citizenship Certificate — a proof-of-citizenship form, not an application to become a citizen. If you want the form explained field by field, see our CIT 0001 step-by-step guide. For a broader walkthrough of the whole grandparent pathway, see the grandparent pathway guide.

What this is worth to you

A Canadian Citizenship Certificate is not a formality — it's the legal proof that unlocks a Canadian passport, the right to live and work in Canada without a visa, and access to things like Canadian university tuition rates for citizens. Because Bill C-3 applies retroactively, there's no deadline pressure baked into the law itself, but the documents you need (especially older provincial birth records) only get harder to obtain the longer you wait, particularly if your grandfather has passed away and no one else in the family has copies.

Frequently asked questions

If my grandfather was born in Canada, am I automatically a Canadian citizen?

If the chain from your grandfather to you was never broken — no renunciations, no pre-1977 loss-of-citizenship events — then yes, you are already a Canadian citizen under section 3 of the Citizenship Act. You still need a Citizenship Certificate to prove it and use it (for a passport, for example), but the citizenship itself doesn't depend on that certificate being issued.

Does it matter if my grandfather never lived in Canada as an adult?

No. The qualifying event is being born in Canada, not living there. Your grandfather could have left as an infant and never returned, and the analysis is the same.

Will I lose my other citizenship if I claim this?

No. Canada permits dual citizenship, and claiming a Canadian citizenship you already hold by descent isn't a renunciation of anything else. Most applicants keep their existing citizenship unchanged.

What if my grandmother, not my grandfather, was born in Canada?

Same rule, same process. The law is gender-neutral — it's about which grandparent was born in Canada, not which one.

Do I need a lawyer to do this?

Not for the straightforward two-generation case described here. If your chain also involves a birth before 1947, a possible renunciation, or missing records, it's worth getting a second opinion from a Regulated Canadian Immigration Consultant (RCIC) or Canadian immigration lawyer before you file.

Ready to check your eligibility?

If your grandfather (or grandmother) was born in Canada, the fastest way to find out where you stand is our free 60-second eligibility quiz. It walks through your specific chain and tells you exactly which documents you'll need. Start at arryv.ai/check.