A female motorcycle passenger was killed in a freak accident on the Queensboro Bridge early Saturday morning, police said.

The 32-year-old Bronx woman was riding across the span near the East 60th Street exit in Manhattan around 3:20 a.m. when her ride was clipped from behind by a second motorcycle, cops said.

The impact sent the woman tumbling to the ground, where she was caught under the tires of the trailing bike, authorities said.

First responders pronounced her dead at the scene.

Officials are withholding her identity pending family notification of her death.

The male driver of the victim’s motorcycle, as well as the male driver and female passenger of the second bike, were treated for minor injuries at New York Hospital.

Police are still investigating the collision, and no one was immediately charged.