Photo courtesy of David James/2015 Lucasfilm LTD.
Speculation has been ripe about who Rey's real parents are. The most popular theories are she's Luke's daughter or Leia and Han Solo's daughter, making her Kylo Ren's sister. Stirring up the debate further, Star Wars: The Force Awakens director J.J. Abrams left hints about who Rey's parents. He said during an audience Q&A at the Tribeca Film Festival that "Rey's parents are not in Episode VII. So I can't possibly say in this moment who they are. But I will say it is something that Rey thinks about, too."
Of course, this goes against the previously mentioned theories since the speculation is revolving around characters that did show up in the movie. But during an interview with Entertainment Weekly after the Q&A, Abrams clarified that he meant The Force Awakens meant to build up the mystery of her lineage without resolving it. "What I meant was that she doesn't discover them in Episode VII. Not that they may not already be in her world."
Source: Entertainment Weekly