The British Dance Council (BDC) is considering a rule change later this month that would define a dance partnership as being "one man and one lady ... unless otherwise stated".
Critics have claimed the proposal could see same-sex dance partners banned from ballroom competitions because organisers or competitors are not comfortable with their participation.
But BDC president Bryan Allen insisted the proposal followed complaints that mixed-sex dance partners were disadvantaged in competitions against all-male couples.
Mr Allen said: "There had been complaints from a number of people who felt they were unfairly disadvantaged by the participation of all-male dance couples who are physically stronger."
Heather Devine, who competes with her female dance partner Chrisi Lyons, said: "I am really distressed that the BDC is even considering banning us."