The World Athletics Council has decided to ban trans athletes from female track and field events, fearing they have an unfair advantage in competition.
World Athletics has banned transgender women from competing in female track and field events.
"The council has agreed to exclude male or female transgender athletes who have been through male puberty from female world ranking competitions from March the 31st this year," the governing body's president, Sebastian Coe, said on Thursday.
No such athletes currently compete at the highest elite levels of track.
Coe said World Athletics had discussed the issue with the International Olympic Committee, national federations and trans groups before making the decision.
"The majority of those consulted stated that transgender athletes should not be competing in the female category," he said.
