I'm a big fan of both Game of Thrones TV show and The Lord of the Rings movie trilogy and I really want to know if there is any actors who appeared in both of them, because I haven't noticed anyone except for Sean Bean, who played Eddard 'Ned' Stark in GoT and Boromir in LOTR.
No. IMDb has a feature that lets you check for people credited in two separate productions. Sean Bean is the only actor that Game of Thrones and any of the Lord of the Rings movies have in common, though there are several stunts and effects people who worked on both.
As an addendum to Tooth's resourceful find:
- Conan Stevens, GoT: Gregor "The Mountain" Clegane for season 1. PJH1: Bolg the Orc
- Philip Arditti, GoT: Goat Herder 4x06, PJH: (crew) Script Reader/Story Analyst
- Conan Stevens, as above, and again in PJH3: Keeper of the Dungeons
- Chris Reilly, GoT 2x10 "Soldier Tom", 4x01 "Morgan". PJH3: Dwarf Lieutenant (uncredited)
Royd Tolkien played credited characters in both an episode of Game of Thrones (GoT: Hardhome) and in the film The Lord of the Rings: The Return of the King
Yes, Robert Aramayo is credited as Elrond in The Rings of Power and as Young Ned in Game of Thrones.