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(Penal Code section 17235 & 21510.) In Hawaii, it is prohibited to possess, make, offer, move, or transport any balisong/Butterfly-type knife. In More In-Depth , there were as soon as legal constraints on butterfly knives, however, as of July 2013, the Kansas Comprehensive Knife Rights Act decriminalized the carrying of all types of bladed weapons.

In Chicago it is prohibited to bring a hidden knife with a blade longer than 2. 5 inches. Hidden bring of a double-edged knife is restricted. Automatic (switchblade) and gravity knives are restricted. In Indiana it is legal to own and carry a butterfly knife both open or hidden. In Kentucky, the balisong is legal for hidden and open carrying anywhere one is not otherwise forbidden from bring a concealed deadly weapon.
In Maine, it is legal to own sell and carry. In Massachusetts, the balisong is legal for hidden and open carrying so long as it does not" [present] an unbiased threat of risk to a person of affordable and typical perceptiveness." Restrictions likewise apply depending upon the area of the person bring the knife (such as within a public school).

In New Jersey the criminal law, NJSA 2C:39 -1, suggests balisongs are prohibited but the question of legality or illegality is an open question. In New Mexico, possession of a butterfly knife is unlawful, since the butterfly knife is a "switchblade" within the meaning of the statute making ownership of switchblades illegal.
Zuniga, 303 A.D. 2d 773 (2nd Dept. 2003)] Nevertheless, the law prohibiting gravity knives was found to be unconstitutional and their possession was legalized in 2019. In North Carolina, people are allowed to bring most pocketknives most of the time. Statute S.14-269, which prohibits the concealed carrying of any "bowie knife, dirk, dagger", or "other lethal weapon of like kind" doesn't use to an "normal penknife carried in a closed position".
In Ohio, it is legal to own a balisong and carry it openly, and illegal to bring hidden, as it is considered a fatal weapon. in Oklahoma, the balisong is legal for open carry however is unlawful to carry hidden. In Oregon, it is prohibited to carry a concealed balisong.