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Montana: motorcycle helmet laws

Who must wear a motorcycle helmet in your state: everyone, only some riders, or no one.

Single detailed source

Type of law	Partial
Who must wear a helmet	Riders under 18

Not wearing a helmet can reduce what you recover after a crash in some states, even where a helmet is not required. Passenger rules may differ from rider rules.

General information only, not legal, insurance or financial advice. Not affiliated with any government agency. Exceptions can apply. Confirm with the state agency, the court or a licensed professional in Montana.

How Montana compares

30 of 51 states and DC share this answer (Partial): Alaska, Arizona, Arkansas, Colorado, Connecticut, Delaware, Florida, Hawaii, Idaho, Indiana, Kansas, Kentucky, Maine, Michigan, Minnesota, Missouri, Nebraska, New Mexico, North Dakota, Ohio, Oklahoma, Pennsylvania, Rhode Island, South Carolina, South Dakota, Texas, Utah, Wisconsin, Wyoming.

Also for Montana: Car insurance by state in Montana · Claim deadlines in Montana · Small claims limits in Montana · Total loss rules in Montana · Dog bite rules in Montana · Shared fault rules in Montana · Accident reporting rules in Montana · Phone-while-driving laws in Montana · Uninsured drivers in Montana · All Montana rules on one page

How we checked this

Requirements come from the Governors Highway Safety Association's state helmet law pages, sourced from IIHS and reviewed by state highway safety offices in 2025. Last checked: November 12, 2026. Laws change; confirm with the state agency or a licensed professional before acting.

Cross-checked sources agree   Checked on official source confirmed on a government, court or legislature site   Single detailed source one detailed table built from statutes or official data   Under review sources disagree; read the note and the law.