Mary Lowndes was a British stained-glass artist who co-founded the stained glass studio and workshop Lowndes and Drury in 1897. She was an influential leader in the Arts and Crafts movement, not only for her stained glass work and successful studio-workshop, but also for opening doors for other women stained glass artists. She was an active participant in the suffragette movement, acting as Chair of the Artists' Suffrage League, and creating poster art to assist the movement.