A 20-year-old woman told cops Sunday that she had been raped at a St. John’s University frat party, law-enforcement sources said.

She said she had been at the off-campus party Friday night, was drinking and passed out.

When she woke, she said, she realized she was being violated simultaneously by two men. Three other men were in the room, she said.

The woman, who said she attends the Queens school, said she knew two of the five men.