The 35-year-old actor - who started dating Taylor Swift three weeks ago - is desperate to play the suave super-spy and has completely overhauled his diet and exercise regime.
A source at Eon productions, who make the Bond films, told The Sun: "Tom Hiddleston is already bulking up for the Bond role on a special diet. His new physique has been noticed by the bosses who now have him at the top of their list to replace Daniel Craig.
#tomhiddleston #tom #hiddleston #hiddles #hiddlestoner #hiddleston_tom_
A photo posted by Tom Hiddleston (@hiddleston_tom_) on Jun 21, 2016 at 2:24pm PDT
"Tom Hardy is going to be his main contender and not Idris Elba as everyone thinks.
"He was their pick up until recently but Hiddleston has shot ahead and he is working extra hard to get the part."
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Tom started dating Taylor, 26, just a few weeks ago but the pair are already inseparable.
A photo posted by Tom And Tay (@hiddleswiftforever) on Jun 30, 2016 at 12:32am PDT
They have been spotted at her home in New York, meeting her parents in Nashville and his mother in Suffolk and are currently on a romantic trip to Rome where they have been openly flaunting their romance.
#tomhiddleston #tom #hiddleston #hiddles #hiddlestoner #hiddleston_tom_
A photo posted by Tom Hiddleston (@hiddleston_tom_) on Jun 22, 2016 at 1:59am PDT
Taylor started dating Tom - who she met at the Met Gala in New York in May - immediately after her split from Calvin Harris and friends say she is throwing herself into the relationship because the 'Thor' actor is exactly her type.
A source previously said: "Tom checks off a lot of boxes for Taylor. He's hot, smart, talented, British, everything she's into. What's not to like? She's going with it and why shouldn't she?
They have been bonding over the industry, their childhoods, where they are from. It's the getting-to-know-you phase. Taylor is just happy to have the time to meet someone new and move on from Calvin."