Montana’s knife laws are relatively lenient compared to many other states, making it a knife-friendly jurisdiction. However, there are still important regulations and restrictions to be aware of when carrying or using pocket knives in the state.
General Knife Laws
As of 2025, Montana law does not specifically ban the ownership of any particular type of knife. The state allows individuals to possess and use various types of knives, including pocket knives, without many restrictions. In fact, recent legislative changes have made Montana even more permissive regarding knife ownership and carry.
Concealed Carry
Prior to 2017, Montana law prohibited the concealed carry of knives with blades longer than 4 inches. However, this restriction was removed with the passage of H.B. 251 in April 2017. The amended law now defines “concealed weapon” as only pertaining to firearms, effectively removing restrictions on concealed carry of knives regardless of blade length.
Open Carry
Open carry of knives is generally permitted in Montana. There are no specific statutes against open carry for most types of knives.
Restrictions and Prohibited Locations
While Montana’s knife laws are generally permissive, there are still some important restrictions to keep in mind:
- Schools: The possession of a knife with a blade of 4 inches or more, a sword, or a straight razor is prohibited on school premises.
- Government buildings: Some local government buildings may have restrictions on knife carry.
- Federal buildings: Knives are generally prohibited in federal buildings.
Local Ordinances
In 2019, Montana passed legislation (HB 155) that prevents local governments from enacting or enforcing ordinances that restrict knife ownership, use, possession, or sale beyond what is prohibited by state law. This ensures consistent knife laws across the state.
Automatic Knives and Switchblades
As of April 3, 2019, Montana removed restrictions on the possession and use of automatic knives (switchblades). These are now legal to own and carry in the state.
Age Restrictions
Montana law does not explicitly state age restrictions for knife ownership. However, it’s advisable to exercise caution when allowing minors to carry knives, especially in school settings where restrictions apply.
Enforcement and Penalties
While Montana’s knife laws are relatively permissive, using any knife in a threatening or harmful manner can lead to criminal charges. Violating knife laws, such as carrying a prohibited knife in a school, can result in fines up to $500, imprisonment up to 6 months, or both.
Montana’s knife laws are among the most lenient in the United States, allowing for the ownership and carry of most types of knives, including pocket knives. However, it’s crucial to be aware of restrictions in specific locations like schools and government buildings. As always, responsible use and carry of knives is essential to avoid legal issues and ensure public safety.
SOURCES:-
[1] https://nobliecustomknives.com/us-knife-laws/montana-knife-laws/
[2] https://pocketmontana.com/laws/knife/
[3] https://discoveringmontana.com/montana/knife-laws/
[4] https://knifeade.com/montana-knife-law/
[5] https://945maxcountry.com/?p=9489
