A 29-year-old woman was raped by an acquaintance in Central Park, police said Saturday.

The terrifying attack happened in the Harlem Meer at East 109th Street and East Drive at 8:40 p.m. Friday, cops said.

The woman went into the park with the man, who she knew as “Baby,” and at one point, the two began using angel dust, police sources told The Post.

The man then forced himself on her and raped her, the sources said.

A passerby heard the woman’s cries for help and called 911.

The suspect was described by police as in his 30s with short hair and a thin build. He was last seen wearing a white sweater and black sweatpants.

The victim was taken to Mount Sinai Hospital, authorities said. Her condition was not immediately known.