Massachusetts has long been known for strict knife laws, but recent court decisions and legislative changes—especially in 2024 and 2025—have shifted the legal landscape. Here’s what you need to know about owning, carrying, and using pocket knives in Massachusetts.
What Pocket Knives Are Legal to Own?
Folding knives, Swiss army knives, multitools, and kitchen knives designed for utility and not as weapons are generally legal to own.
Blade length: In most of Massachusetts, there is no statewide blade length restriction specifically on pocket knives intended for lawful utility use. That said, certain localities (e.g., Boston) impose stricter rules, such as a 2.5-inch blade limit.
What Knives Are Illegal or Restricted?
The following knives are either completely banned or highly restricted for carry, either openly or concealed:
Stilettos, daggers, dirks, double-edged blades, and ballistic knives…