Kit, 31, kept his rugged look when he married in real life last month to Scottish co-star Rose Leslie, who played Ygritte.
But he intends to shed the trademark locks as soon as he has delivered his final lines as Jon Snow this month for the show’s eighth and final season that will air next year.
Kit revealed: “I’d like to step away and enjoy the obscurity, cut my hair and shave, make myself less recognisable as the character and go do some other things with a completely new look and tone.”
Meanwhile, Game Of Thrones stars have been warned not to walk away with souvenirs or “personal treasures” from the props department when they shoot their final scenes.
Several actors are reportedly “angry and dismayed” they have been forced to leave without a single memento.
But HBO bosses have told them that most of the props are likely to be used again for a prequel of the series that was announced earlier this year and will not air until 2020.