Enith Sijtje Maria Brigitha (born 15 April 1955) is a former leading competitive swimmer in the 1970s.

She won two bronze medals at the 1976 Summer Olympics in Montreal, Quebec, Canada, in the women's 100 m and 200 m freestyle.

[1][2] In the 100m freestyle, Brigitha finished behind two swimmers from East Germany, a country proven to have engaged in systematic doping of its athletes in the Montreal 1976 Olympic games.

[2] American Shirley Babashoff, who would have earned three individual golds were it not for the East Germans, has been outspoken about this issue.

She supports Brigitha and swimmers from other countries who were adversely affected by the East German illegal practices.