Reverting to a name you legally used before marriage (such as a former surname) after divorce is generally handled through Ontario's civil name registration process using your marriage and divorce documentation as proof — a simpler path than adopting a brand-new name, which instead requires a full Change of Name Act application. Afterward, you'll need to update your driver's licence, health card, passport, SIN record, and financial and employment records separately.
- Reverting to a former legal name (one you held before marriage) is generally simpler than a full legal name change for a brand-new name, which falls under the Change of Name Act and has fuller requirements.
- You'll need your marriage certificate and your divorce certificate or final divorce order as proof — see our guide on getting the divorce certificate itself if you don't have it yet.
- Ontario's Office of the Registrar General, accessed through ServiceOntario, handles civil name registration matters; a fee applies, and you should confirm the current amount directly with ServiceOntario.
- A passport name change is a federal matter through Service Canada/Passport Canada — a separate process from the provincial name registration, not the same office.
- A parent generally cannot change a child's surname unilaterally — this typically requires the other parent's consent or a court order.
- There is no deadline to do this after your divorce order is final, but doing it sooner shortens the window where your ID doesn't match your current legal and marital reality.
Reverting vs. a Full Name Change
Most people who want to change their name after a divorce are not trying to become someone new — they want to go back to a name they already held legally before the marriage, such as a former surname. That distinction matters because Ontario treats these as two different things.
Reverting to a former legal name — one you legally used before you married — is generally handled through Ontario's civil name registration process using your marriage and divorce documentation as proof. Because you're resuming a name the government already has a record of you holding, this route generally doesn't require the fuller set of requirements — such as additional consents or certain background checks — that apply to a true legal name change.
A full legal name change, by contrast, is for adopting a name you have never legally held before. That falls under Ontario's Change of Name Act and is a separate, fuller application process with its own requirements. We cover that briefly further down, but this guide focuses on the far more common post-divorce scenario: going back to a name you already had.
This is a practical housekeeping step, not a legal decision about your marriage itself — your name is separate from the terms of your divorce application or any property division that was decided along the way.
Ask yourself: "Is this a name I legally held at some point before my marriage?" If yes, you're almost certainly looking at the simpler reversion process below. If you want a name you've never legally used — not a former surname, not a name from a prior marriage — that's the fuller Change of Name Act process instead.
What Proof You'll Need
To revert to a former legal name, you'll generally need two documents on hand:
- Your marriage certificate or registration — showing the name you held before the marriage and the name you took through it
- Your divorce certificate or final divorce order — showing that the marriage has legally ended
Together, these two documents establish both halves of the story: the name you're returning to, and the legal fact that the marriage that changed your name is over. If you don't yet have your divorce certificate, that's a separate process from the name change itself — see our full guide to getting a divorce certificate in Ontario, including the 31-day waiting period and how to apply. This article assumes you already have, or are in the process of getting, that certificate — it focuses specifically on what happens with your name once you have it.
Some people assume that because they have their divorce order, that's sufficient proof on its own. In practice, you want the proof documents actually in hand — generally both the marriage documentation and the divorce certificate or order — before you go to apply, rather than finding out you're missing one at the counter or partway through an online application.
Where This Is Handled
Civil status and name registration matters in Ontario — including reverting to a former legal name — are handled by the Office of the Registrar General, which you access through ServiceOntario. This is the same provincial body responsible for birth, marriage, and death registrations in Ontario.
A fee applies to process the name registration, but we're deliberately not quoting a specific dollar figure here — government fees are periodically updated, and stating an exact amount risks being wrong by the time you read this. Confirm the current fee, and the exact current form or process, directly with ServiceOntario before you apply, the same way we tell readers to confirm the court fee in our divorce certificate guide.
Before you apply, double-check that the spelling and format of the former name on your marriage documentation is exactly what you want to revert to — this is the name that will appear on your updated record, so it's worth confirming now rather than after the registration is processed.
Updating Your ID & Records
Once your name is officially reverted with the province, the harder — and often underestimated — part begins: updating every piece of ID and every institution that still has your old name on file. Work through this list methodically rather than piecemeal, since a mismatch between your ID and your legal name can cause friction later.
- Driver's licence — update through ServiceOntario once your name registration is complete.
- Health card (OHIP) — also updated through ServiceOntario; keep this in sync with your driver's licence so your two most-used pieces of provincial ID match.
- Passport — this is a federal document, administered by Service Canada/Passport Canada, not ServiceOntario. It's a separate application with its own process, so don't assume your provincial update carries over automatically.
- Social Insurance Number (SIN) record — the name on file with Service Canada for your SIN should also be updated so it matches your other ID for employment and tax purposes.
- Bank accounts and credit cards — financial institutions generally require proof of the name change before updating your accounts and reissuing cards.
- Employer and HR records — update your name with payroll and HR so your pay records, benefits, and tax slips are consistent going forward.
- Children's school records — if you're also updating your own records with a school for pickup lists or emergency contacts, keep in mind this is about your name, not your child's. See the flag below.
- Wills and estate documents — have your will and any powers of attorney reviewed and updated to reflect your current legal name, and confirm beneficiary designations reflect your post-divorce financial situation generally.
- Professional licences or designations — if you hold a professional licence or designation, check with that regulator about updating your name on file.
- Social media and email — lower priority legally, but worth updating for consistency once everything else is done.
A parent generally cannot change a child's surname unilaterally as part of their own post-divorce name change. Changing a child's surname typically requires either the other parent's consent or a court order, because the change affects the child's identity and the other parent's parental rights — it is not simply bundled in with your own name reversion. If you want to change your child's surname and the other parent won't agree, this generally needs to go before the court rather than being handled administratively. If your situation also involves your children's travel documents, see our guide on travel consent letters after divorce in Ontario.
If You Want a Name You've Never Held
Everything above assumes you're reverting to a name you legally held before your marriage. If instead you want to adopt a completely new name — one you've never legally used, not a former surname and not a name from an earlier marriage — that's a different and fuller process under Ontario's Change of Name Act. It carries its own set of requirements that go beyond what's described in this guide.
This article focuses on the far more common post-divorce scenario — reverting to a prior name — because that's what the large majority of people in this situation are actually looking to do. If your situation involves adopting an entirely new name, speak with a family lawyer about the Change of Name Act requirements that would apply to you specifically.
Common Mistakes
The recurring errors in this process are predictable: assuming the divorce order by itself is sufficient proof, rather than having both the marriage documentation and the divorce certificate or order actually in hand; updating some institutions but not others, which leaves you with a mismatched set of ID and records that can cause problems down the line — a bank account that doesn't match your driver's licence, for example; and assuming that because you're changing your own name, you can also change your child's surname at the same time without the other parent's consent or a court order, which is generally not the case.
If your divorce also involved a dispute over parenting arrangements rather than an amicable resolution, it's worth reviewing our overview of uncontested vs. contested divorce in Ontario for how that affects what you can and can't do unilaterally regarding your children afterward.
Timing: When to Do This
There is no deadline for reverting to a former name after your divorce order is final, and this timeline runs independently of how long the divorce itself took — you can apply whenever you're ready, whether that's the week after your divorce is finalized or years later. That said, there's a practical reason not to put it off indefinitely: the longer you wait, the longer your ID and records don't match your current legal and marital reality, which can create friction with banks, employers, and government agencies in the meantime — particularly if you're also planning to remarry, since a consistent paper trail makes that process easier too.
Have questions about your name change, your divorce documents, or what applies to your children's records? Call our Toronto family lawyers at 416-274-2222.
Frequently Asked Questions
Not necessarily. Reverting to a former legal name is generally an administrative process through ServiceOntario using your marriage and divorce documentation, and many people handle it themselves. A family lawyer can help if your situation is more complicated — for example, if your divorce order itself needs correcting, or if a name change intersects with a dispute over your children's records.
No. Resuming a name you legally held before marriage is generally handled through the provincial vital statistics/name registration process using your marriage and divorce proof documents. Adopting an entirely new name you've never legally used before is a different, fuller process under Ontario's Change of Name Act, with its own requirements such as consents and background checks.
Generally your marriage certificate (or registration) and your divorce certificate or final divorce order, since together they show both that you took a name through marriage and that the marriage has legally ended. If you don't yet have your divorce certificate, see our separate guide on how to obtain it from the court that granted your divorce.
A fee applies, but we don't quote a specific figure here because government fees are periodically updated. Confirm the current amount directly with ServiceOntario before applying.
Civil name registration matters in Ontario are handled by the Office of the Registrar General, which you access through ServiceOntario. This is a provincial process, separate from any federal matters like your passport.
Yes. A passport is a federal document administered by Service Canada/Passport Canada, which is a different process and a different level of government from the provincial name registration you complete with ServiceOntario. Updating your provincial ID does not automatically update your passport.
Generally, no — not unilaterally. A parent typically cannot change a child's surname without either the other parent's consent or a court order, because the change affects the child's identity and the other parent's parental rights. If the other parent won't consent, this usually needs to go before the court rather than being handled administratively.
No. You can apply whenever you're ready once your divorce order is final — there is no time limit. That said, the longer you wait, the longer your ID and records may not match your current legal and marital status, which can cause friction with banks, employers, or government agencies in the meantime.
That's a different process — a full legal name change under Ontario's Change of Name Act — rather than the simpler reversion process this guide focuses on. It involves its own, fuller set of requirements. Speak with a family lawyer or review the Change of Name Act requirements directly if this applies to you.
No. Your legal name is separate from the terms of your divorce order, including any support or parenting arrangements. Changing your name does not reopen or affect those terms.