Central Maine Derby (CMD) is a skater owned and operated LLC operating an amateur flat track roller derby league out of the greater Bangor, Maine area.

The members of CMD represent a growing group of citizens with a dream of seeing skating fitness and Women’s Flat Track Roller Derby in greater Bangor succeed. CMD promotes skating fitness to both women and men of all sizes. They can be found promoting their Skate Don't Hate anti-bullying message in Maine schools, volunteering around the community in a myriad of ways, and tearing it up on the track.