Maryland Knife Laws: What You Can and Can't Carry

Most people in Maryland who carry a folding knife rarely consider whether it is legal. They usually keep it in their pocket and use it for simple tasks like opening packages or cutting cord, which feels normal.

Maryland law clearly defines what is considered a weapon. The difference between a legal everyday knife and a banned one often depends on small details that many people miss.

Some knives are restricted under Maryland law, while others are generally permitted. Knowing these rules can help you avoid a misdemeanor, which could result in a fine of up to $1,000 and up to three years in prison.

What Maryland Allows and Prohibits

• Folding knives (penknives) are legal to carry openly or concealed in Maryland, regardless of blade length

• Switchblades, dirk knives, bowie knives, and star knives are classified as weapons under state law

• Assisted-opening knives are legal because they lack a switch in the handle

• Locking blades do not change a penknife’s legal status

• Baltimore City has stricter local ordinances banning switchblade possession entirely

• Carrying any knife with the intent to use it as a weapon or for self-defense is unlawful

• Minors face curfew restrictions on dangerous weapon carry in 12 specific counties

• Penalties range from 12 months to three years imprisonment, depending on the violation

What Maryland Law Considers a Weapon

Maryland Criminal Law Code § 4-101 lists specific types of knives that qualify as weapons under state law. These include dirk knives, Bowie knives, switchblade knives, star knives, sand clubs, razors, and nunchaku. If you carry any of these concealed or openly with unlawful intent, you face criminal charges.

The statute also tells you what does not count as a weapon, and this is where everyday carry becomes straightforward. A penknife without a switchblade falls outside the weapon definition entirely.

The Penknife Definition and Why It Matters

In Maryland, the word “penknife” is more important than it sounds. The American Knife and Tool Institute says Maryland law defines a penknife as any knife with a blade that folds into the handle. So, your modern folding knife with a 3.5-inch blade is treated the same as an old-fashioned two-blade pocket knife.

In 1991, the Bacon v. State of Maryland case clarified how courts interpret this definition. The case concerned a folding knife with a locking blade manufactured by Buck Knives. The Maryland court made two points that remain relevant today.

First, the court said penknives include any knife with a blade that folds into the handle, even if the knife is large. Second, the court held that a lockable blade is a safety feature and does not alter the knife’s status as a penknife.

This means you can carry a large folding knife with a liner lock, frame lock, or any other locking system, and it will still be considered a penknife, not a weapon.

Assisted-Opening Knives Are Legal

Many people confuse assisted-opening knives with switchblades. They may look similar, but they operate differently, and Maryland law treats them as distinct.

A switchblade has a spring mechanism controlled by a switch or button located in the handle. When you press the switch, the blade automatically deploys from the closed position.

With an assisted-opening knife, you must open the blade by hand before the spring completes the opening. You move the blade using a thumb stud, flipper, or similar part. The spring only takes over after you begin opening it.

The statutory language in Maryland Criminal Law Code § 4-105 and federal law both specify that the defining feature of a switchblade is a switch located in the handle. Assisted openers lack this feature.

This difference became widely known during the Freddie Gray case in Baltimore. State’s Attorney Marilyn Mosby said the knife involved was not a switchblade and was legal under Maryland law. The key point was how the knife worked.

What Counts as Concealed Carry

Maryland’s standard for concealment comes from Smith v. State, decided in 1973. The court defined concealed carry as a weapon situated so that ordinary observation would not reveal it to people near enough to see it if it were not hidden.

The court also made an important point: a weapon need not be hidden entirely to be considered concealed. If part of it is visible, that does not always mean it is being carried openly.

This makes pocket-clip carry unclear, since part of the knife is visible while the rest is in your pocket. No case law clearly answers this. The safest approach is to remember that a visible clip does not always mean your knife is being carried openly.

Concealment is a question for the jury to decide based on the specific facts of each case.

Baltimore City Has Stricter Rules

Maryland does not have a rule that overrides local knife laws. This means cities and counties can make their own rules, and Baltimore City has done so.

Baltimore City Code § 59-22 prohibits selling, carrying, or possessing any knife with an automatic spring or device for opening or closing the blade. This local ordinance covers switchblades more broadly than state law and applies to possession alone, not only to carrying with intent.

The penalty for violating this ordinance is a misdemeanor punishable by up to $1,000 in fines, up to 12 months in prison, or both.

Ocean City also has its own knife rules, so it is a good idea to check them before carrying a knife there.

The Intent Problem You Need to Understand

This is where Maryland’s knife law is stringent. It is illegal to carry a knife for self-defense or with any plan to use it as a weapon, even if the knife is otherwise legal.

State law penalizes carrying a knife that qualifies as a weapon with the intent to use it as such. Courts have interpreted this to mean that carrying a knife for defensive purposes constitutes unlawful intent.

This means your reason for carrying a knife is just as important as the type of knife you have. If you tell an officer you carry it for protection, that counts as unlawful intent. Using it for daily tasks is allowed.

Restrictions on Minors

Twelve Maryland counties impose curfew restrictions on minors carrying dangerous weapons. These counties are Anne Arundel, Baltimore, Caroline, Cecil, Harford, Kent, Montgomery, Prince George’s, St. Mary’s, Talbot, Washington, and Worcester.

In these counties, minors may not openly carry or conceal a dangerous weapon between one hour after sunset and one hour before sunrise.

Exceptions exist for minors engaged in specific activities:

• Trap shooting

• Sport shooting events

• Organized civic activities

• Military activities

• Traveling to or from these activities

Penalties for Violations

Maryland imposes different penalties depending on the specific violation.

A transfer violation under § 4-105 also carries a minimum fine of $50 upon conviction.

Practical Guidelines for Legal Carry

Based on Maryland statutes and case law, here are the practical boundaries for carrying a knife in the state.

You can legally carry any folding knife, no matter the blade length, with or without a lock. Assisted-opening knives are allowed because they do not have a switch in the handle. Fixed-blade knives used as tools, not weapons, are in a gray area and depend on the situation.

You are not allowed to carry switchblades, dirks, Bowie knives, or star knives. You also cannot carry any knife, even if you claim it is for self-defense. In Baltimore City, switchblades are prohibited.

When you carry a knife in Maryland, use it only for its intended tasks, like cutting, opening packages, or preparing food. Do not call it a defensive tool or use it as one.

A Final Word on Staying Compliant

If you know the differences between knife types, you can follow Maryland law more easily. A folding knife with a thumb stud and assisted opening is legal. But a knife of the same size, with a button on the handle that opens it automatically, is not.

If you carry a good folding knife for everyday use, you are following the law in most of Maryland. Check local rules when you visit Baltimore City or Ocean City, do not use your knife for defense, and remember it is meant to be a tool.