🏛️ District of Columbia Knife Laws
Overview
District of Columbia has statewide preemption — local governments cannot create additional knife restrictions beyond state law. Both open and concealed carry face restrictions. Blade length limits apply at 3 inches in certain contexts. Switchblades and ballistic knives are prohibited; balisongs / butterfly knives and disguised knives have restrictions.
Quick Legal Facts
Carry Laws & Blade Length
DC Code § 22-4504(a) prohibits carrying 'either openly or concealed' any deadly or dangerous weapon. There is no distinction between open and concealed carry. Any knife can qualify as a 'dangerous weapon' based on its design or circumstances. Ordinary pocket knives carried for utility purposes are generally permissible but there is no statutory safe harbor.
Statute: 22-4504
Concealment is irrelevant under DC law. The same prohibition that applies to open carry applies to concealed carry — carrying any 'deadly or dangerous weapon' either openly or concealed is prohibited under § 22-4504(a). Penalty: up to $12,500 fine and/or 5 years imprisonment.
Statute: 22-4504
No outright blade length ban. Under § 22-4514(b), possessing a dagger, dirk, razor, stiletto, or knife with a blade longer than 3 inches with intent to use unlawfully is illegal. The 3-inch threshold is triggered only in combination with unlawful intent. However, any knife regardless of length can be treated as a 'dangerous weapon' under § 22-4504 based on context.
Knife Type Legality
| Knife Type | Status | Details |
|---|---|---|
| Switchblades | Illegal | Switchblade knives are explicitly listed as categorically prohibited weapons under § 22-4514(a). No intent element is required — mere possession is illegal. 'Switchblade' is not defined in the statute. Penalty: up to $2,500 fine and/or 1 year imprisonment. Statute: 22-4514. |
| Balisongs / Butterfly Knives | Restricted | Not explicitly listed as prohibited under § 22-4514(a). However, in U.S. v. Vinton (2010), the DC Court of Appeals held a butterfly knife constituted a 'deadly or dangerous weapon' under § 22-4504. While not banned per se, carrying a balisong in DC carries significant legal risk. |
| Disguised Knives | Restricted | Not specifically enumerated in § 22-4514(a). However, disguised knives would almost certainly qualify as 'deadly or dangerous weapons' under § 22-4504 because they have no utility purpose beyond concealing a blade. Per Gorbey v. US (2012), objects with no utility use besides inflicting injury are per se dangerous weapons. |
| Assisted-Opening | Unclear | The statute bans 'switchblade knife' but does not define the term. It is unclear whether assisted-opening knives fall within the prohibition. AKTI explicitly warns the status is ambiguous and recommends assisted-opening knives be avoided in DC. Statute: 22-4514. |
| Ballistic Knives | Illegal | While DC Code does not explicitly name ballistic knives, federal law (15 U.S.C. § 1245) prohibits possession within federal territories, and DC falls squarely within that jurisdiction. A ballistic knife would also constitute a 'dangerous weapon' under DC Code §§ 22-4504 and 22-4514(b). |
Legal Disclaimer
This information is provided for general educational purposes and should not be construed as legal advice. Laws change frequently and local ordinances may impose additional restrictions beyond state law. Always verify with official state sources before making decisions about knife carry or ownership. KnifeInformer is not a law firm — consult a qualified attorney for specific legal questions.
