William Shatner has told Star Trek fans to write to director JJ Abrams if they want to see him return as Captain James Kirk.
The 85-year-old played the character in the classic 1960s television series and the first seven Star Trek films.
He has been linked with a return to the Starship Enterprise since Abrams rebooted the franchise in 2009.
Speaking at the Saturn Awards in Los Angeles, Shatner said: "We'd all be open to it, but it's not going to happen.
"The fans would love to see it. Have them write to JJ Abrams at Paramount Studios."
Shatner confirmed he will not appear in the upcoming film Star Trek Beyond, which stars Chris Pine in the role of Captain Kirk.
Reports suggested Shatner could return to the sci-fi series after the late actor Leonard Nimoy reprised his role as Spock in the 2009 film Star Trek and its 2013 sequel Star Trek: Into Darkness.
Shatner praised Abrams, who also directed Star Wars Episode VII: The Force Awakens, for making "wonderful" Star Trek films.
He said: "I think JJ Abrams solved the problem of the glass ceiling of the box office that we always hit and in making it a great ride.
"He's a wonderful director and he's running with that franchise. I think it's great."
Star Trek actor Anton Yelchin died in a freak accident on Sunday when he became trapped between his car and security fence at his home.