The victim was struck at about 9 p.m. Saturday at Queensboro Plaza on an elevated No. 7 train.
The person’s age and identity were not immediately released.
The Metropolitan Transportation Authority says the station was totally closed for hours during an investigation. No. 7 and N trains bypassed the normally very busy Queens stop.
“Surfing” subway trains is illegal, and authorities consider it a common but dangerous activity that often involves youthful daredevils.