Charlize will reprise her role as the cyberterrorist, Cipher while Helen Mirren played Magdalene Shaw, the mother of Jason Statham's character Deckard Shaw.
They will be joining returning cast Vin Diesel, Michelle Rodriguez, Jordana Brewster, Tyrese Gibson, Chris "Ludacris" Bridges, Nathalie Emmanuel, and newbie John Cena.
The ninth instalment of the franchise which kicked off production in June is currently in its third week of filming in London.
Vin shared the exciting news in a video on Instagram saying: "We have a lot of the original cast here including Oscar winners Charlize Theron and Helen Mirren. A few surprises including John Cena who I believe is going to shine in this movie."
The upcoming film has been besieged with some other off-screen drama.
In 2017 Universal announced that the release date for the film would be pushed back from April 2019 to April 2020.
There have also been long-running rumours of a feud between Vin and Dwayne Johnson.
Dwayne and Jason Statham will star in the spin-off Hobbs & Shaw in which they reprise their characters from the franchise.