Kaya Scodelario - Katniss Everdeen
Popular fandom opinion here, but I can see why. As soon as I started reading and knowing about how she was and all I could picture Kaya perfectly, not only she fits the description but I think she can also perfectly pull off every side of Katniss, the fierce one, the "don't show emotions" one, the sweet one, if you saw her in Skins you will probably understand what I mean, I think she's perfect for the part.
Other options I also like: Willa Holland, Jessica Stroup.
Hunter Parrish - Peeta Mellark
Ok, this one is really random, because I haven't seen him in Weeds or any movie (at least that I can remember), and I thought I'd picture Alex Pettyfer when I started reading the books, but as soon as Peeta appeared, I just pictured Hunter. I think he has the kind of soft/sweet look that Peeta should have and he's also, clearly, totally hot BUT still not drop dead gorgeous like in my opinion Alex is. I kind of picture Peeta being hot but also in some way kind of... average looking? I don't know how to explain it, but I think Hunter fits perfectly.
Other options I also like: Zach Roerig
Steven R McQueen - Gale Hawthorne
Not so sure here, but I chose him because I know he can pull off the character, I can picture him being Gale, and he might not be totally alike Kaya, but... whatever. I don't have any other real reason more than actually picturing him acting Gale, to be honest. Lame, I know.
Other options I also like: Nicholas Hoult
Jeffrey Dean Morgan & Judy Greer - Haymitch Abernathy & Effie Trinket
See, I kind of had my troubles here. At first for some reason I kept picturing Haymitch fat, like... Harry Potter's uncle Vernon fat, don't even ask me why because I don't know xD And then after keep reading about him, I wasn't really sure who I had in mind even though I knew I had a known face. I started going through Google and other people's casts... I saw RDJ or Hugh Laurie, and I wasn't really sure about it, and when I saw Jeffrey Dean Morgan and it clicked in my head, HE was the one I was picturing. As in for Effie, I wasn't fully sure either, but then I saw Judy in '13 going 30' by the 31654 time I saw that film in my life and I realized she could be a great Effie. I know people picture her maybe older, or Idk just different, but I can see Judy pulling off Effie's personality.
Elle Fanning & Elizabeth Mitchell - Primrose Everdeen & Mrs Everdeen
Elle seems popular fandom opinion too, and I can clearly see why, she's cute, she's sweet, and she's a great actress, and even being blonde and all I can see a little resemblance to Kaya, maybe the face shape, I don't know. As in for Mrs Everdeen, I never saw anyone suggesting Elizabeth so I had to. I might be biased, because I adore her in every single way, but I think she looks like Elle in some way too, and even though it's not what she's used to do, I think she can pull off a perfect Mrs Everdeen, she's a wonderful actress, I mean she got nominated for an Emmy for Lost S6 being on screen like what, 5 minutes? 15? I don't know, the point is that she's amazing and I can see her being Prim and Katniss' mom.
Ariel Winter & Stanislav Ianevski - Rue & Thresh
After I say something let me say that yes, I do realize I misspelled Thresh on the graphic. But when I realized it was too late to fix it so nevermind, sorry for that. Now moving on from that, I also do realize that the books say they're both dark-skin-toned, my bad there. I have this thing sometimes that apparently my imagination ignores some details. (Until the Twilight movies came out, Jasper AND Carlisle were brunette in my head, I swear, even if SM kept writing over and over again on how blonde they were, never mind) So, I chose Ariel because I can see the resemblance between her and Elle, and she looks all sweet and fragile but I can picture her jumping everywhere almost-flying and all. And Stanislav because everytime Katniss talked about Thresh I could only think of Viktor Krum, how she described him being all huge and all, I don't know. Also, on both, I just pictured Rue and Thresh like being really tanned, like I said not really dark skin as in african-american-like or anything, so they can always... make Ariel and Stanislav get tanned for it and I can see them.
Jack O’Connell & Taylor Momsen - Cato & Clove
Same here about the description, since apparently they are brunette! Anyways, I can see Taylor pulling off crazy psycho Clove, even more with her rock n' roll-esque look she has now and her dark make up and all, I mean I obviously won't expect from Clove to be with a perfect make up all the time in the arena, but in somehow she can, I don't know, as camouflage or something, I just think it will add so much with Taylor's bright blue eyes to the craziness Clove has about killing Katniss when she gets her and all. As for Cato, I know he's supposed to be maybe a little bigger, but if you watched Skins maybe you'll get why I chose him, I can picture him being all cocky jerk and all, I don't know, I just had Jack in mind when I read Cato. Besides they are both great actors in my opinion.
Amber Heard & Lily Cole - Glimmer & Foxface
Not too much to say here. Glimmer is supposed to be blonde tall sexy and all, and to be honest Amber was the first girl that came to my head, mostly with the sexy part xD And Lily does have an unique face, I can see her running super fast through the arena and being all clever and silent and all.
As in for everyone else, sadly I couldn't find anyone that I saw and said "OMG YES IT'S HIM/HER!". I'm not really sure who I have in my mind for Madge (though I'm sure I have someone, I just don't know who xD), or the other tributes, or Cinna or anyone else. Sorry for that. I also just finished the first book so I'll probably add more casting later when I read the rest of them :)