Knife Laws in Canada Explained

01 What the Criminal Code actually says

Section 84(1) of the Criminal Code, RSC 1985, c. C-46, defines a prohibited weapon, in the knife clause, as "a knife that has a blade that opens automatically by gravity or centrifugal force or by hand pressure applied to a button, spring or other device in or attached to the handle of the knife." That sentence is the mechanism test: automatics, gravity knives, and centrifugal (flick-open) knives are prohibited weapons. Other weapons can be prohibited because a regulation lists them.

Possession of a prohibited weapon is its own problem, quite apart from carrying it. The Code does not set a federal maximum blade length for ordinary knives. A long chef's knife in a kitchen block is not a prohibited weapon for being long. A short switchblade is prohibited for how it opens.

02 The border test: Customs Notice 18-01

On 16 November 2017 the Canadian International Trade Tribunal decided T. LaPlante v. President of the Canada Border Services Agency (Appeal AP-2017-012). CBSA then issued Customs Notice 18-01 (January 2018) to tell importers what that decision meant at the border.

The notice states that centrifugal knives will be classified as prohibited weapons if the blade opens by centrifugal force when released from the handle into the fully ejected and locked position with a simple and brisk outwardly flick of the wrist — including knives that need some preliminary or simultaneous minimal manipulation of a flipper or other non-edged parts of the blade. CBSA said it would immediately prohibit importation of knives that open that way, with a narrow exception for businesses holding the right firearms licence. Buying from a Canadian retailer who has already imported a catalog is a different act from ordering a flickable knife to your door from overseas.

03 Intent is most of carry law

Section 88 makes it an offence to carry or possess a weapon "for a purpose dangerous to the public peace or for the purpose of committing an offence." Section 90 makes it an offence to carry a weapon concealed unless authorised under the Firearms Act. Together they are why "I have a knife for self-defence" is not a lawful story in Canada. Self-defence as a reason to carry a knife is treated as an unlawful purpose, not as an excuse.

A folding knife carried as a tool — opening boxes, cutting line, preparing food — is the ordinary, lawful pattern. The same object, described or used as a weapon, is a different legal fact. Peace officers and courts look at the whole picture: where you were, what you said, how the knife was carried, whether it is a prohibited mechanism. There is no costume that makes a prohibited knife into a tool.

04 What this does not cover

Provincial and municipal rules can add limits the Code does not mention — parks, transit, courthouses, schools, events. Air travel is a Transport Canada and airline matter. Other countries will not honour this summary. The vault sells to adults 18 and over, and we expect pieces to be owned and carried as tools, with judgment, under the law as it stands where you are.

If a section of this guide is ever overtaken by an amendment, a new tribunal decision, or a corrected reading, write to orders@knifevault.ca. Confirmed errors are corrected in the guide and ship with the next site update, which is also what the editorial policy promises.

Sources & Further Reading

• ◆ Criminal Code, RSC 1985, c. C-46, s. 84(1) — definition of prohibited weapon (Justice Canada)
• ◆ Criminal Code, s. 88 — possession of weapon for a dangerous purpose (Justice Canada)
• ◆ Criminal Code, s. 90 — carrying a concealed weapon (Justice Canada)
• ◆ CBSA Customs Notice 18-01 — Notification of CITT decision on centrifugal opening knives
• ◆ Canadian International Trade Tribunal — T. LaPlante v. President of the CBSA, Appeal AP-2017-012
• ◆ Regulations Prescribing Certain Firearms and Other Weapons as Prohibited or Restricted, SOR/98-462

Frequently Asked Questions

Questions from the Counter

Is there a legal blade length for knives in Canada?

There is no federal maximum blade length for ordinary knives. Prohibition is about mechanism (automatic, gravity, or centrifugal opening) and about purpose (a knife carried as a weapon). Local bylaws and site rules can still add limits the Code does not.

Are folding knives legal in Canada?

Manually opened folding knives are generally lawful to own. Automatic, gravity, and centrifugal-opening knives are prohibited weapons under s. 84(1). Carry is a separate question of intent, concealment, and local rules — this is not a licence to carry anything, anywhere.

Can I carry a knife for self-defence in Canada?

No. Carrying a knife for self-defence is treated as an unlawful purpose. Section 88 prohibits possessing a weapon for a purpose dangerous to the public peace. The vault does not sell or discuss knives as self-defence equipment.

Is this legal advice?

No. This is a plain-language reading of published federal sources as we understand them at the time of writing. It is not legal advice. For a specific situation, consult a lawyer licensed in your province.

From the Page to the Palm

Reading about steel is one thing. Holding it is the other.

Every claim in this guide is backed by a piece on the shelf — folding knives steel, named and priced plainly in CAD.

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