Martha "Maggie" Bowen-Hanna (née Bowen; born 1980) is a retired American swimmer who won two medals in individual medley events at the 2001 World Aquatics Championships.
In 2000, she narrowly missed Olympic qualification by finishing third in the 200 m medley in the US trials. She won several National Collegiate Athletic Association titles in medley and freestyle events in 2001–2003.