Hawaii has some of the strictest knife laws in the United States, with detailed regulations governing the possession, carry, and use of knives. Until recently, certain types of knives such as switchblades, butterfly knives (also known as balisongs), and gravity knives were broadly banned across the state. However, as of 2024 and into 2025, there have been important legislative changes modifying some of these prohibitions.
Under Hawaii Revised Statutes, carrying concealed knives like daggers, dirks, and carrying switchblades or butterfly knives was prohibited, with violations considered misdemeanors punishable by up to one year in jail. The laws also restricted the sale and transfer of these knives. However, in 2024, legislation including HB2342 lifted the ban on making, selling, and carrying switchblades, butterfly knives, and gravity knives. Despite this repeal, concealed carry of such knives remains generally restricted. Open carry in some cases may be allowed, but there are still many limitations, especially in sensitive locations like schools and government buildings.
For common knives such as single-edged pocket knives, Hawaii law is more lenient. These knives can usually be carried openly or concealed without length restrictions, as long as they are not used unlawfully. Other knives legally allowed include Bowie knives that are not automatic, throwing knives, and disguised knives that resemble everyday objects like pens or lipstick tubes.
The state’s evolving knife legislation reflects a balance between enhancing individual rights and ensuring public safety. There remains some controversy and legal debate over vague language in statutes that can lead to enforcement challenges, especially around what constitutes a “bladed weapon.”
In practical terms, residents and visitors should be cautious and stay informed about current laws. While owning and carrying many types of knives is legal, carrying knives concealed without a permit or in restricted areas can lead to arrest or fines. The law is complex, and exceptions often apply to law enforcement or military personnel.
Hawaii’s knife laws in 2025 permit possession and open carry of many knives previously banned, like butterfly and switchblades, but still prohibit concealed carry and impose restrictions on dangerous blades. Anyone owning or carrying knives in Hawaii should ensure they understand the nuances of the law and follow all regulations closely.
Sources
[1] https://kniferights.org/legislative-update/hawaii-knife-ban-bill-filed/
[2] https://tkellknives.com/knife-laws-in-hawaii-understanding-the-aloha-states-regulations/
[3] https://nobliecustomknives.com/us-knife-laws/hawaii-knife-laws/
[4] https://ravencresttactical.com/hawaii-knife-laws/
[5] https://www.akti.org/state-knife-laws/hawaii/
