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Louis Martin Custom Knives

Reviewed September 2026

Idaho Knife Laws

In Idaho, switchblades are legal and butterfly knives are legal. Under constitutional carry, qualifying adults may carry concealed knives without a permit, including in cities; blades over 6 inches still meet the deadly-weapon definition. The blade limit to know: 6 inches for the deadly-weapon definition.

Switchblades: Legal

All common knife types are legal.

Butterfly Knives: Legal

Butterfly knives are legal.

Concealed Carry

Under constitutional carry, qualifying adults may carry concealed knives without a permit, including in cities; blades over 6 inches still meet the deadly-weapon definition.

Local Ordinances

Idaho has no statewide preemption, so cities and counties can add stricter rules. Check local ordinances before carrying. Restrictions mainly bite for disqualified persons and restricted places.

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.

Idaho Knife Law FAQ

Are switchblades legal in Idaho?
Switchblades (automatic knives) are legal in Idaho. All common knife types are legal. Reviewed September 2026; this is general information, not legal advice.
Are butterfly knives legal in Idaho?
Butterfly knives (balisongs) are legal in Idaho. Butterfly knives are legal.
Is it legal to carry a knife in Idaho?
Generally yes, within limits: Under constitutional carry, qualifying adults may carry concealed knives without a permit, including in cities; blades over 6 inches still meet the deadly-weapon definition. Carrying any knife with intent to use it unlawfully is a crime everywhere.
What size knife can you legally carry in Idaho?
The limit to know is 6 inches for the deadly-weapon definition. Restrictions mainly bite for disqualified persons and restricted places.

Hand-Forged Knives, Shipped to Idaho

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