The 2009 sci-fi reboot cast younger actors as the series' famed characters, with Zachary Quinto stepping into the role of Spock.
Nimoy still featured in the hit movie as an older version of the character, but he announced in 2010 he was retiring from acting and was happy to let Quinto take the reins of his iconic hero.
But new US reports have indicated that he will star in the sequel to the reboot.
When asked by CNN whether he would appear in the follow-up, Nimoy replied: "We're talking. We're talking."
Editors at movie site Ain't It Cool News then reported they have "compelling independent confirmation that Nimoy is absolutely in the new film".
The untitled Star Trek sequel will hit cinemas in 2013.
And some more celeb pics of the day...
Dita Von Teese arriving back at her hotel, just before 2am with a male companion. London (Pic: WENN)
Kylie Minogue visits her management company, London (Pic: WENN)
Fearne Cotton outside the BBC Radio 1 studios, London (Pic: WENN)
Jedward arrive at the opening night of 'Greener' at The Gaiety Theatre, Dublin (Pic: WENN)
Chris Odowd and Dawn Porter Fashion Kicks at Manchester Point Old Trafford Cricket Ground (Pic: WENN)
Louis Walsh and guest at Fashion Kicks at Manchester Point Old Trafford Cricket Ground (Pic: WENN)
Georgia Salpa leaving FHM's 100 Sexiest Women In The World 2012 party at Proud Cabaret, London (Pic: WENN)
Kristen Wiig arrives at NBC Studios, New York City (Pic: WENN)
JLS arrive at McCarron International Airport in Las Vegas for the first leg of band member Marvin Humes' stag-do. The boys arrived with a group of friends in Sin City where they will kick off the celebrations, before they head to Miami to continue the party.(Pic: WENN)
Liam Hemsworth picks up some supplies at a pet store Los Angeles (Pic: WENN)
Miley Cyrus exits her Windsor Pilates class, Los Angeles (Pic: WENN)
Carol Vorderman leaving 34 restaurant, London (Pic: WENN)
Daniel Craig Photocall for the lastest James Bond 007 film 'Skyfall' at Ciragan Palace in Istanbul (Pic: WENN)
Vanessa Hudgens and Austin Butler out and about in Santa Monica (Pic: WENN)