Idaho Knife Laws


Idaho is an interesting state in regard to knife laws.  On the one hand, there aren’t any kinds of blades you cannot own and you can carry your knives either openly or concealed.  There are some restrictions, of course, but where Idaho gets weird is its disqualification laws.  There are quite a number of things that can disqualify you from carrying knives in Idaho.

What Kinds of Knives are Legal in Idaho?

All of them, including Bowie knives, switchblades, disguised knives, undetectable knives, and butterfly knives.  While the law defines ‘deadly weapon’ as anything with a blade longer than 6″ or any dirk, dagger, or Bowie knife, the law also doesn’t restrict you from carrying these knives either openly or in a concealed manner.

You need parental consent to own a dirk or a Bowie knife if you’re under 18, but as long as you have their consent, you can still own one.  Heck, if you’re 12 and want one, you can have one but only if your parents are with you while you’re in possession of it.

What Kinds of Knives are Illegal in Idaho?

Technically none, but there are a few restrictions as well as ways to become disqualified.

What You Cannot Do

  • Possess a Bowie or dirk knife without parental consent if under 18
  • Possess a Bowie or dirk if under the age of 12 and without parents with you
  • You cannot bring any knife with a blade of more than 2.5″ onto school grounds
  • You cannot sell a dirk or Bowie knife to a minor

How to Get Disqualified

  • Be charged with a crime that will result in a term of more than one year of imprisonment if convicted
  • Have been adjudicated guilty in any court of a crime punishable by one year in prison
  • Are a fugitive
  • Do drugs
  • Was dishonorably discharged from the armed forces
  • Are mentally ill
  • Are mentally incapacitated
  • Are gravely incapacitated
  • Are on probation
  • Has received a suspended sentence, although your rights will be restored once completing probation
  • Are under a protection order
  • Have renounced citizenship
  • Have a pending trial

Basically, if you face losing your knife rights or are charged with a crime, get yourself a lawyer ASAP!

Relevant Statutes

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