I’ll post the links of fics I know. If they’re good or bad, it’s up to you. If you know more fics, please reblog and add to the list. =)

Arya/Gendry tag on AO3:

• Hands 
• Kindle Fire with Snow
• Random Comment Fics (Prompt: Role reversal, Gendry is the trueborn son and Arya is Ned Stark’s bastard daughter)
• perhaps this is a misfortune
• (500) Days of Winter
• No Featherbed For Me (Ugh! I love this one!)
• A War Story is a Black Space
• Base Metal
• The Odds of Being Alone
• Drive the Dark Things Away
• Five Times Gendry Treated Arya Like a Girl
• Five Times Arya Stark Shared a Bed With Gendry
• But Now It Seems You’ve Set It Running Free
• New positions
• The Feast of Three Weddings
• Justice (The Trouble with Arya)
• Mine
• In the snow

GoT Kink Meme on LJ:

• arya/gendry; godswood
• gendry goes down on arya
• arya/gendry - modern!au, car sex
• Unfilled prompts:  Arya/Gendry (post series with older!Arya) - Rough sex. Because Arya really likes it that way,  older!arya/gendry; arya on top/being the dominant one, She’s older and he can’t keep his eyes and hands off her, blood kink, loss of virginity fluff (gendry takes arya’s), against the wall, clothes on, reunion/the first time they see each other again

FF.net 

• Hope with Golden Eyes
• To Him She Would Be Arya
• Winterburns
• Devoted
• The Bastard and the Broken Trees
• of Wolves and Dogs
• The Acorn Princess
• The SheWolf and The Bull