South Dakota Knife Laws (2026): No General Carry Restriction

South Dakota has no standalone statute banning the carry of an ordinary knife, openly or concealed. Knives are instead reached only through a generic "dangerous weapon" definition that feeds several separate offenses: concealment with intent to commit a felony, possession in a county courthouse or the state capitol, and possession on public school property. The state's firearms-preemption statutes, at both the municipal and county level, do not extend to knives.

Jurisdiction scope: This page covers South Dakota state law only, principally SDCL §§ 22-1-2, 22-14-8, 22-14-22 through 22-14-28, 13-32-7, 9-19-20, and 7-18A-36. It does not cover South Dakota's concealed pistol permit statutes (Chapter 23-7) in detail, since those govern handguns rather than knives.

No general statewide knife-carry statute

South Dakota does not restrict open or concealed carry of an ordinary knife through any standalone statute. SDCL Chapter 22-14, "Unlawful Use of Weapons," contains no provision that names a knife type or sets a blade-length threshold for general public carry the way many other states do. Instead, a knife becomes legally significant only through the definitions section that governs the entire criminal code, SDCL § 22-1-2, and only when a knife is involved in one of a small number of specific offenses.

§ 22-1-2(10) provides: "'Dangerous weapon' or 'deadly weapon,' any firearm, stun gun, knife, or device, instrument, material, or substance, whether animate or inanimate, which is calculated or designed to inflict death or serious bodily harm, or by the manner in which it is used is likely to inflict death or serious bodily harm." This definition names a knife explicitly, but it is a functional definition used across many separate criminal statutes (enhancement provisions, restricted-place statutes, and forfeiture rules), not itself a carry offense. A separate, narrower term, "controlled weapon," defined at § 22-1-2(8) as including "a machine gun and short shotgun, but does not include a firearm silencer," does not reach a knife at all, a distinction that matters for § 22-14-8 below.

Concealment with intent to commit a felony

SDCL § 22-14-8 provides: "Any person who conceals on or about his or her person a controlled or dangerous weapon with intent to commit a felony is guilty of a Class 5 felony." Because a knife qualifies as a "dangerous weapon" under § 22-1-2(10) even though it is not a "controlled weapon" under § 22-1-2(8), this statute reaches concealed knife carry, but only where the state proves the person concealed the knife with intent to commit a felony. Mere concealment of a knife, without that intent, is not an offense under this section. The Code's only statutory definition of "concealed" is written for a firearm alone: § 22-1-2(6) provides that "'concealed,' any firearm that is totally hidden from view. If any part of the firearm is capable of being seen, it is not concealed." That bright line (any visible part means not concealed) has no textual application to a knife; § 22-14-8's concealment element as applied to a knife is not defined by this statute.

County courthouses and the state capitol

SDCL §§ 22-14-22 to 22-14-28 impose a separate restricted-place rule, and it is worth reading past § 22-14-23 to the sections around it. § 22-14-22 defines "county courthouse" as "any building occupied for the public sessions of a circuit court, with its various offices, including any building appended to or used as a supplementary structure to a county courthouse," so a courthouse's register-of-deeds or treasurer's office is inside the restricted building, not merely the courtroom, and "state capitol" includes any building appended to or used as a supplementary structure to the capitol. § 22-14-23 provides: "Except as provided in § 22-14-24, any person who knowingly possesses or causes to be present any firearm or other dangerous weapon, in any county courthouse or in the state capitol, or attempts to do so, is guilty of a Class 1 misdemeanor." Because a knife is a "dangerous weapon" under § 22-1-2(10), this section reaches knife possession in either location.

§ 22-14-24 lists seven exceptions, and they do not all apply to both locations. Exceptions (1) through (3) apply generally: the lawful performance of official duties by a law enforcement or court officer; possession by a judge or magistrate; and possession by a federal or state official or member of the armed services acting under lawful authority. Exceptions (4) and (5) apply only in the state capitol: a qualified law enforcement officer's or retired officer's concealed pistol under the federal Law Enforcement Officers Safety Act, and an enhanced-permit holder's concealed pistol in most of the capitol (excluding the Supreme Court chamber and certain access-controlled offices) after a specific advance-notice procedure to the superintendent of the Division of Highway Patrol. Exceptions (6) and (7) apply only in a county courthouse: possession by a county or state employee assigned to work there, outside areas under Unified Judicial System supervision, and, at (7), "the lawful carrying of a firearm or other dangerous weapon in a county courthouse incident to a hunter safety or a gun safety course or for any other lawful purposes." Read most literally, the closing clause, "or for any other lawful purposes," is not limited to hunter-safety or gun-safety courses, and on that reading it could reach ordinary lawful courthouse carry of an item like a knife. That reading is not free of doubt: "incident to" may instead govern the entire series, so the exception would reach carrying incident to a course or incident to some other specific lawful purpose rather than carrying for no particular purpose at all, and a reading that excepts all lawful carrying leaves little for the neighboring sections to do, since (6)'s separate courthouse-employee exception, § 22-14-28's county-waiver power, and § 22-14-26's posting duty would each become unnecessary if ordinary lawful carry were already excepted across the board. No reported South Dakota court decision construes (7). The state capitol, unlike a county courthouse, has no comparable "any other lawful purposes" clause reaching an ordinary knife carrier at all; exceptions (4) and (5) there are limited to specific concealed-pistol scenarios.

Four related sections change the practical answer further. § 22-14-25 opens by subordinating a court's own rule-making power to § 22-14-24: "Except for the authorizations set forth in § 22-14-24, nothing in this chapter limits the power of a court to punish for contempt or to promulgate rules or orders regulating, restricting, or prohibiting the possession of weapons, within any building housing such court or any of its proceedings, or upon any grounds pertinent to such building." A court's contempt authority and its own rules can restrict weapons more tightly than § 22-14-23 alone, but not in a way that overrides the § 22-14-24 exceptions discussed above, including (7). § 22-14-26 requires notice of § 22-14-23 to be "posted conspicuously at each public entrance to a county courthouse and the state capitol." § 22-14-27 bars a defendant from raising a concealed-pistol permit as a defense to a § 22-14-23 prosecution. § 22-14-28 lets a county commission, by a majority vote of its members-elect, waive § 22-14-23's courthouse restriction for that county entirely, a waiver that also supersedes the county-employee exception at § 22-14-24(6). A reader in a specific county courthouse cannot answer the carry question from § 22-14-23 alone without checking whether that county has adopted such a waiver.

Public schools

SDCL § 13-32-7 provides: "Any person who intentionally carries, possesses, stores, keeps, leaves, places, or puts into the possession of another person, any dangerous weapon, firearm, or air gun ... on or in any public elementary or secondary school premises, vehicle, or building, or on or in any premises, vehicle, or building used or leased for public elementary or secondary school functions, whether or not any person is endangered by any action under this section, is guilty of a Class 1 misdemeanor." Because a knife is a "dangerous weapon" under § 22-1-2(10), this section reaches knife possession on public school property. Ten exceptions apply: a law enforcement officer; an individual who has completed a school sentinel training course; an enhanced concealed-pistol permit holder aged 21 or older with written permission from the school's principal or controlling official; any concealed-pistol permit holder while inside a vehicle or securing or retrieving a pistol from one; a starting gun at an athletic event; a firearm or air gun at a firing range, gun show, or supervised training session; the ceremonial presence of an unloaded weapon at a color guard ceremony; and, notably, the section does not apply at all to a nonpublic school, a church or other house of worship, or a nonpublic school located on church or house-of-worship premises.

Firearms preemption does not reach knives

South Dakota has two parallel local-preemption statutes, one for municipalities and one for counties, each limited by its own text to firearms, though the two are not identical. SDCL § 9-19-20 provides: "No municipality may pass an ordinance that restricts or prohibits, or imposes any licensure requirement or licensure fee on the possession, storage, transportation, purchase, sale, transfer, ownership, manufacture, or repair of firearms or ammunition or their components." SDCL § 7-18A-36 applies the same restriction to counties but reaches further: it also bars a county ordinance that "imposes any tax" on that same conduct, a word the municipal statute does not carry. Both statutes go on to say the same thing after that: "This section does not apply to any generally applicable zoning ordinance, building regulation, or fire code so long as the ordinance, regulation, or code is not used to circumvent the prohibition under this section." Both also direct the attorney general to send a cease-and-desist order to a noncompliant local government and, if it does not comply, to sue for injunctive relief, and both require a court to award "reasonable costs, expenses, and attorney's fees" to a person charged under a void ordinance. Neither statute's operative text mentions a knife anywhere, so a municipal or county ordinance that separately regulates knives is not preempted by either statute.

Federal law: what it does and does not reach

Federal law does not ban an individual from owning or carrying a switchblade. The Federal Switchblade Act, 15 U.S.C. §§ 1241 to 1245, restricts interstate commerce in switchblade knives, barring their manufacture for, or introduction, transport, and sale in, interstate commerce, and, in 15 U.S.C. § 1245, makes it a federal offense to knowingly possess, manufacture, sell, or import a ballistic knife in or affecting interstate commerce or within federal territorial jurisdiction. The two switchblade offense sections, §§ 1242 and 1243, do not apply to certain knives and people, listed as exemptions in 15 U.S.C. § 1244. A 2009 amendment, § 1244(5), exempts any knife with a spring, detent, or other closure-bias mechanism that requires hand, wrist, or arm exertion on the blade itself to overcome the bias and assist opening, the carve-out that keeps modern assisted-opening folding knives legal in interstate commerce. A separate exemption, § 1244(4), covers a person with only one arm possessing or carrying a switchblade with a blade three inches or less.

Disclaimer: This article provides general legal information about South Dakota's knife laws as of September 2026. It is not legal advice. Consult a lawyer licensed in South Dakota for advice about a specific situation.

For a state-by-state comparison, see knife laws by state. South Dakota's self-defense statutes are covered separately on the South Dakota self-defense laws page.

Statutes cited reflect their in-force version as of 2026-09-18. Last updated: 2026-09-18.