Is Butterfly Knife Legal in Maryland? (2026)

Key facts

Status

Legal

Permit required

No

Jurisdiction

Maryland

Last reviewed

2026-04-09

Butterfly Knife laws in Maryland

In Maryland, butterfly knives, also known as balisongs, are generally legal to possess, carry, and sell. There is no specific state statute that explicitly prohibits butterfly knives. However, it is important to note that Maryland law defines a "switchblade knife" as a knife that opens automatically by spring pressure, or "centrifugal force," or by "any pressure applied to the blade, springs, or other contrivance." While butterfly knives are typically opened through manual manipulation, their design and the rapid flicking motion used to deploy them can sometimes lead to confusion or misclassification under broader "gravity knife" or "switchblade" prohibitions, depending on interpretation and local ordinances. While state law does not broadly prohibit butterfly knives, individuals carrying them, especially concealed, should be aware of general prohibitions against carrying dangerous or deadly weapons. Maryland law, for instance, prohibits the wearing or carrying of any handgun, knife, or razor openly or concealed with the intent to injure another. Furthermore, some municipalities within Maryland may have their own ordinances that restrict the possession or carrying of certain types of knives, including butterfly knives. Travelers should also be aware that the Transportation Security Administration (TSA) prohibits butterfly knives in carry-on luggage on airplanes. Possession and carrying of prohibited weapons in Maryland can result in misdemeanor charges, potentially leading to fines and imprisonment, depending on the specific circumstances and intent. While butterfly knives are not explicitly banned, improper or unlawful carrying of any knife with the intent to commit a crime or to cause harm could lead to charges. Residents should verify local municipal ordinances as they may impose additional restrictions beyond state law. Age requirements for the purchase of knives, as with other bladed weapons, may also be in effect at the retail level.

Frequently asked questions

Is butterfly knife legal in Maryland for travelers?

For travelers visiting Maryland, butterfly knife is currently legal. In Maryland, butterfly knives, also known as balisongs, are generally legal to possess, carry, and sell. There is no specific state statute that explicitly prohibits butterfly knives. However, it is important to note that Maryland law defines a "switchblade knife" as a knife that opens automatically by spring pressure, or "centrifugal force," or by "any pressure applied to the blade, springs, or other contrivance." While butterfly knives are typically opened through manual manipulation, their design and the rapid flicking motion used to deploy them can sometimes lead to confusion or misclassification under broader "gravity knife" or "switchblade" prohibitions, depending on interpretation and local ordinances. While state law does not broadly prohibit butterfly knives, individuals carrying them, especially concealed, should be aware of general prohibitions against carrying dangerous or deadly weapons. Maryland law, for instance, prohibits the wearing or carrying of any handgun, knife, or razor openly or concealed with the intent to injure another. Furthermore, some municipalities within Maryland may have their own ordinances that restrict the possession or carrying of certain types of knives, including butterfly knives. Travelers should also be aware that the Transportation Security Administration (TSA) prohibits butterfly knives in carry-on luggage on airplanes. Possession and carrying of prohibited weapons in Maryland can result in misdemeanor charges, potentially leading to fines and imprisonment, depending on the specific circumstances and intent. While butterfly knives are not explicitly banned, improper or unlawful carrying of any knife with the intent to commit a crime or to cause harm could lead to charges. Residents should verify local municipal ordinances as they may impose additional restrictions beyond state law. Age requirements for the purchase of knives, as with other bladed weapons, may also be in effect at the retail level.

Do I need a permit for butterfly knife in Maryland?

Maryland does not specifically require a permit for butterfly knife, though general regulations apply.

Can I transport butterfly knife through Maryland?

Transport laws for butterfly knife in Maryland depend on the specific item and your route. Generally, transport is allowed if you comply with state regulations. Always check states you pass through.

What are the penalties for butterfly knife violations in Maryland?

Penalties for butterfly knife violations in Maryland vary based on the specific offense. Always verify current laws before traveling.