According to its official score on Rotten Tomatoes, Fantastic Beasts: The Crimes of Grindelwald is the lowest-rated film in the Harry Potter franchise. In fact, it's the only film in the entire Harry Potter frantchise that received a "rotten" rating, meaning it scored below 60 percent.

The tenth film in J.K. Rowling's cinematic Wizarding World series, and the sixth film to be directed by David Yates, Fantastic Beasts: The Crimes of Grindelwald follows the events of 2016's Fantastic Beasts and Where to Find Them. It centers around magizoologist Newt Scamander (Academy Award winner Eddie Redmayne) after he's recruited by a young Albus Dumbledore (Jude Law) to keep the infamous Gellert Grindelwald (Johnny Depp) from carrying through with his dark agenda. Also starring Katherin e Waterston, Dan Fogler, Alison Sudol, Zoë Kravitz, Claudia Kim, Callum Turner, and Ezra Miller, Fantastic Beasts and the Crimes of Grindelwald has failed to live up to the hype, according to critics.

 According to Rotten Tomatoes, the official score for Fantastic Beasts and the Crimes of Grindelwald is 55 percent. In terms of "lowest rated" films in the Harry Potter franchise, it's followed by its predecessor, Fantastic Beasts and Where to Find Them, which is the second lowest-rated film in the franchise with a 74 percent rating, as well as 2007's Harry Potter and the Order of the Phoenix, which is the third lowest-rated film in the franchise with a 77 percent rating. As a comparison, the highest-rated film in the franchise is Harry Potter and the Deathly Hallows - Part 2 with a 96 percent rating.