Abstract: A motorcycle mounted helmet carrier device includes a pair of linear support members each having first and second ends, each support member with a helmet receiving support plate member at the first end thereof. A linear connecting rod member is secured at each end to one linear support member to maintain the pair of support members in parallel register. The second end of each linear support member attaches to a motorcycle. Each linear support member includes at least one aperture adjacent the helmet receiving support plate at the first end thereof. Each linear support member with aperture therein is adapted for locking a helmet supported upright upon the support plate to the linear support member.