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Montana Concealed Knife Carry (2026)

Permitted: A 'concealed weapon' is defined as only a firearm, so carrying any knife concealed (any blade length) is not an offense in Montana (MCA 45-8-316).

PermittedVerified Jul 7, 2026

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Official source: mca.legmt.gov →

General legal information, not legal advice — verify important decisions with a licensed attorney.

Concealed Knife Carry in states bordering Montana

The same rule in each neighboring state LawLert has verified, from that state’s own official source.

IdahoConditional
Common knives (blade 6 in or less) may be carried concealed without a license; a concealed dirk, bowie knife or dagger needs a license unless an exception applies (Idaho Code 18-3302).
Verified Jul 7, 2026 · Source: legislature.idaho.gov · Full Idaho rule →
North DakotaConditional
An ordinary knife under 6 inches (not a switchblade/dagger/stiletto) isn't a 'dangerous weapon' and may be carried concealed; concealing a dangerous-weapon knife needs a license (NDCC 62.1-04-02).
Verified Jul 7, 2026 · Source: ndlegis.gov · Full North Dakota rule →
South DakotaPermitted
SD sets no blade-length limit and allows concealed carry of ordinary knives; concealing a dangerous weapon is a crime only if done with intent to commit a felony (SDCL 22-14-8).
Verified Jul 7, 2026 · Source: sdlegislature.gov · Full South Dakota rule →
WyomingPermitted
A common knife may be carried concealed (a 'deadly weapon' only if used/intended as one); Wyoming permitless carry covers eligible adults; no blade-length limit (W.S. 6-8-104).
Verified Jul 7, 2026 · Source: wyoleg.gov · Full Wyoming rule →

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