Forbes has put Diesel and The Rock top of its list of the year's top-grossing actors, largely thanks to the success of The Fate of the Furious.
Gadot is in third place after appearing in Wonder Woman and Justice League.
And Emma Watson is fourth - her version of Beauty and the Beast was the year's biggest earner at global box offices.
Johnny Depp is in the top five, one place ahead of his Murder on the Orient Express co-star Daisy Ridley, who has Star Wars: The Last Jedi counting towards her total.
The top five top-grossing actors:
Vin Diesel ($1.6bn global box office takings from The Fate of the Furious & xXx: Return of Xander Cage)
Dwayne Johnson ($1.5bn - The Fate of the Furious, Baywatch & Jumanji: Welcome to the Jungle)
Gal Gadot ($1.4bn - Wonder Woman & Justice League)
Emma Watson ($1.3bn - Beauty and the Beast)
Johnny Depp ($1.1bn - Pirates of the Caribbean: Dead Men Tell No Tales & Murder on the Orient Express)
Tom Holland, Chris Pratt, Chris Hemsworth and John Boyega also made it into the top 10.
Forbes calculated the figures using data from BoxOfficeMojo.com up to 26 December.
The list comes two weeks after the magazine published its annual list of the "most overpaid" actors - those whose box office takings provide the least value for their salaries.
The top five "most overpaid" actors:
Mark Wahlberg (Estimated box office return of $4.40 for every $1 salary paid)
Christian Bale ($6.70/$1)
Channing Tatum ($7.60/$1)
Denzel Washington ($10.40/$1)
Brad Pitt ($11.50/$1)