Reviewed September 2026

Massachusetts Knife Laws

In Massachusetts, switchblades are legal and butterfly knives are restricted. Carrying dirks, daggers, stilettos, and double-edged knives remains restricted; folders are generally fine. There is no notable statewide blade length limit.

Switchblades: Legal

The switchblade carry ban was struck down by the state supreme court in August 2024.

Butterfly Knives: Restricted

The 2024 ruling addressed switchblades; other listed blades remain restricted to carry.

Concealed Carry

Carrying dirks, daggers, stilettos, and double-edged knives remains restricted; folders are generally fine.

Local Ordinances

Massachusetts has no statewide preemption, so cities and counties can add stricter rules. Check local ordinances before carrying. A fast-moving area of law after Canjura v. Commonwealth (2024): verify before carrying automatics.

Not legal advice. Statuses reviewed September 2026 from state statutes and reputable trackers. Laws change; verify the current statute or consult a lawyer before buying or carrying. See the full 50-state comparison.

Massachusetts Knife Law FAQ

Are switchblades legal in Massachusetts?

Switchblades (automatic knives) are legal in Massachusetts. The switchblade carry ban was struck down by the state supreme court in August 2024. Reviewed September 2026; this is general information, not legal advice.

Are butterfly knives legal in Massachusetts?

Butterfly knives (balisongs) are restricted in Massachusetts. The 2024 ruling addressed switchblades; other listed blades remain restricted to carry.

Is it legal to carry a knife in Massachusetts?

Generally yes, within limits: Carrying dirks, daggers, stilettos, and double-edged knives remains restricted; folders are generally fine. Carrying any knife with intent to use it unlawfully is a crime everywhere.

What size knife can you legally carry in Massachusetts?

Massachusetts has no notable statewide blade length limit, but restricted places (schools, courthouses) and local ordinances still apply. A fast-moving area of law after Canjura v. Commonwealth (2024): verify before carrying automatics.

Hand-Forged Knives, Shipped to Massachusetts

Every Louis Martin blade is hand-forged and ships free anywhere in the US, including right here in Massachusetts. Start with our pocket knives and everyday carry pieces, browse the full collection, and keep our national knife law guide handy when you travel.