A teenage girl was hit in the head with a brick after rowdy revelers dispersed from today St. Patrick’s Parade in the Rockaways, police said.

The 15-year-old suffered a severe head injury when a fight broke out between two men on Beach 128th Street near the beach at around 3:50 p.m., cops said.

Authorities said they do not believe she was the intended target of the brick and it’s not believed the victim knew the men involved in the fight.

The victim was taken to St. Johns Hospital in serious condition for further evaluation.

No arrests have been made and police said they are still investigating.