Is Butterfly Knife Legal in California? (2026)
No. In California, butterfly knife is prohibited. Butterfly knives (balisongs) are prohibited in this state. Classified as a prohibited weapon, possession can result in misdemeanor or felony charges. Manufacturing, sale, and importation are also illegal. No exceptions for collectors..
Key facts
- Status
- Prohibited
- Permit required
- No
- Jurisdiction
- California
- Last reviewed
- 2026-04-09
Butterfly Knife laws in California
In California, butterfly knives, also known as balisongs, are classified as prohibited weapons under Penal Code Section 21310. This statute explicitly bans the possession, manufacture, sale, and importation of any knife, the blade of which is two or more inches in length, that can be folded within its handle by means of a pivot or hinge, and that is designed to be opened by centrifugal force or by a sudden jerking motion of the wrist. This prohibition is strict, and there are no exceptions for collectors or for individuals who claim to possess them for display purposes. Violations of California Penal Code Section 21310 are considered a serious offense. Possession of a butterfly knife can result in either a misdemeanor or a felony charge, depending on the circumstances of the offense and prior convictions. Penalties for a misdemeanor conviction can include up to one year in county jail and/or a fine of up to $1,000. A felony conviction carries more severe consequences, potentially leading to state prison time and significantly higher fines. The Attorney General's office has the authority to prosecute these cases. There are currently no statutory exceptions or exemptions to the prohibition of butterfly knives in California. Some anecdotal information suggests that certain knife types might be treated similarly to switchblades under various laws, but the specific legislation for butterfly knives is clear in its prohibition. For individuals traveling within or through California, it is crucial to understand that butterfly knives are prohibited on commercial aircraft and are subject to strict regulations. Transportation, even if the knife is disassembled or stored, could lead to legal complications. It is also advisable to consult local municipal ordinances, as some cities may have additional or more specific regulations regarding knife possession and carry.
Frequently asked questions
Is butterfly knife legal in California for travelers?
For travelers visiting California, butterfly knife is currently prohibited. In California, butterfly knives, also known as balisongs, are classified as prohibited weapons under Penal Code Section 21310. This statute explicitly bans the possession, manufacture, sale, and importation of any knife, the blade of which is two or more inches in length, that can be folded within its handle by means of a pivot or hinge, and that is designed to be opened by centrifugal force or by a sudden jerking motion of the wrist. This prohibition is strict, and there are no exceptions for collectors or for individuals who claim to possess them for display purposes. Violations of California Penal Code Section 21310 are considered a serious offense. Possession of a butterfly knife can result in either a misdemeanor or a felony charge, depending on the circumstances of the offense and prior convictions. Penalties for a misdemeanor conviction can include up to one year in county jail and/or a fine of up to $1,000. A felony conviction carries more severe consequences, potentially leading to state prison time and significantly higher fines. The Attorney General's office has the authority to prosecute these cases. There are currently no statutory exceptions or exemptions to the prohibition of butterfly knives in California. Some anecdotal information suggests that certain knife types might be treated similarly to switchblades under various laws, but the specific legislation for butterfly knives is clear in its prohibition. For individuals traveling within or through California, it is crucial to understand that butterfly knives are prohibited on commercial aircraft and are subject to strict regulations. Transportation, even if the knife is disassembled or stored, could lead to legal complications. It is also advisable to consult local municipal ordinances, as some cities may have additional or more specific regulations regarding knife possession and carry.
Do I need a permit for butterfly knife in California?
California does not specifically require a permit for butterfly knife, though general regulations apply.
Can I transport butterfly knife through California?
Transport laws for butterfly knife in California depend on the specific item and your route. Since this is prohibited in California, transporting through the state carries legal risk. Always check states you pass through.
What are the penalties for butterfly knife violations in California?
Penalties for butterfly knife violations in California vary based on the specific offense. Always verify current laws before traveling.