Are Butterfly Knives Legal in Wisconsin? (2026)
Partially — Butterfly Knives are legal with restrictions in Wisconsin as of 2026.
Law changed in 2016: The most significant recent change was the 2016 law that legalized the possession and carry of butterfly knives.
Quick Answer
Butterfly knives are legal to possess in Wisconsin, but concealed carry is generally prohibited. The most significant recent change was the 2016 law that legalized the possession and carry of butterfly knives.
- Age restriction: 18+
What the Law Says
Wisconsin law prohibits the concealed carry of a butterfly knife. Open carry is permitted.
— Wis. Stat. § 941.24
| Category | Details |
|---|---|
| Possession | Legal to own at home |
| Sale & Purchase | Legal to sell |
| Penalties | Carrying concealed may result in misdemeanor charges. |
| Age Restriction | 18+ |
| Pending Legislation | None known |
The most significant recent change was the 2016 law that legalized the possession and carry of butterfly knives.
Enforcement Reality
Wisconsin legalized the possession and carry of butterfly knives in 2016. There are no restrictions on open or concealed carry for individuals who are not prohibited from possessing a firearm.
A common mistake is for individuals prohibited from possessing a firearm to carry a butterfly knife, which is illegal.
Local Exceptions
None identified. State law applies uniformly across Wisconsin. Local ordinances may still vary — check with your city or county government for any additional rules.
Real-World Scenarios: Butterfly Knives in Wisconsin
Can You Fly With Butterfly Knives Out of Wisconsin?
Since butterfly knives is restricted in Wisconsin, bringing it to the airport compounds your legal exposure. You're now dealing with both state law and federal jurisdiction. Don't do it.
Can You Cross State Lines With Butterfly Knives From Wisconsin?
This is where people get burned. Wisconsin treats butterfly knives as restricted, but neighboring Minnesota treats it as legal. The law changes at the state line — not gradually, not with a warning sign, instantly. "I bought it legally" is not a defense in the new state. Interstate highways near the Wisconsin/Minnesota border are known enforcement corridors. If you're driving with out-of-state plates in a state where butterfly knives is illegal, you're a target.
Bottom Line
Butterfly Knives are legal with restrictions in Wisconsin. This product is permitted, but specific conditions apply. Violating those conditions can result in fines or criminal charges. Read the rules carefully and consult an attorney if unsure.
Wisconsin vs. the Rest of the US
Across the US, carrying a butterfly knife is fully legal in 39 states, restricted in 10, and illegal in 1. Wisconsin falls in the RESTRICTED category.
View the full 50-state map →Reviewed by cross-referencing the cited state statute against current legislative databases and regulatory publications.
Sources & Verification
This page was reviewed by Ethan Harper by comparing the legal status against the cited state statute. AllowedHere is an informational resource and does not provide legal advice. Consult a licensed attorney for guidance specific to your situation.
Comprehensive Wisconsin Legal Guides
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