They were among 105 actors, filmmakers, executives and others in the movie business who were asked to become members of the Academy of Motion Picture Arts and Sciences.
Cohen is British, Dee is American and Li is Chinese.
Cotillard, who is French, won the best-actress Oscar in February for La Vie En Rose.
Other actors invited into the academy were Americans Josh Brolin and Allison Janney and British film star Ray Winstone.
Dee was a supporting-actress nominee for last year's American Gangster, while Cohen had a screenplay nomination the previous year with Borat: Cultural Learnings of America for Make Benefit Glorious Nation of Kazakhstan.
Also on the list of invitees released on Monday were Jason Reitman, a Canadian who was a best-director nominee for last year's Juno, and that film's writer, Diablo Cody, an American who won the original-screenplay Oscar.
Other Americans on the list include directors Doug Liman (The Bourne Identity), Kimberly Peirce (Boys Don't Cry) and Gore Verbinski (The Pirates of the Caribbean movies); writers Judd Apatow (The 40-Year-Old Virgin), Jeff Nathanson (Catch Me If You Can) and Tamara Jenkins (The Savages); and animators Ash Brannon (Surf's Up) and David Silverman (The Simpsons Movie).
The academy has almost 6000 voting members.
