Figures obtained by The Observer show at least 11 women who had babies at Wexham Park Hospital in the last three years were victims of the barbaric practice.
They are believed to be the first official figures of recorded FGM uncovered in the town.
FGM campaigner Dr Phoebe Abe, from Iver, said: “The real figure is much higher. Recording at hospitals is a joke. A lot of professional people do not want to record it. Many women with FGM would not talk about it when asked, so many go undetected.”