Getting a fix for Jon Snow-centric stories is easier than finding a decent cup of ale in Winterfell’s stores. AO3's tagging system is your true north here, but you have to be willing to put in the work. Just filtering by the character tag will drown you in nonsense crossovers and fics where he’s a side character. My method is more surgical: I start with 'Jon Snow-centric' as the tag, then add whatever specific itch I need scratched—'Identity Reveal', 'Time Travel', 'King in the North'. Sorting by kudos gets you the classics, but I’ve found better writing lately by sorting by bookmarks and filtering for works updated within the last two years.
There’s a writer called Longclaw16 who does these massive, incredibly detailed AUs where Rhaegar won. The prose is a bit much sometimes, but the world-building is addictive. Avoid the 'Modern AU' tag unless you’re into that; it’s a completely different vibe and most of them turn him into a broody college student. The real treasures are hidden in the 'Complete Works Only' filter paired with a high word count—you want the authors who committed to a whole novel’s worth of plot.
Oh, I've gone down this rabbit hole more times than I can count. The real trick isn't just about finding a site; it's about knowing which ones actually have the tags and filters to let you sift through the mountain of content. Archive of Our Own is the absolute powerhouse for this, no question. Their tagging system is so granular you can filter for 'Female Jon Snow' and then drill down into ships, tropes, even word count. I've found some absolute epics there that explore the political and magical ramifications of that change in identity, far beyond just romance. The quality can be incredibly high, with authors really building out her relationships with Stannis or Daenerys in nuanced ways.
But if you're hunting for the classics, the ones that defined the trope years ago, you can't ignore FanFiction.net. The search is a pain, but there's a ton of history there. I'd recommend using a search engine with 'site:fanfiction.net female Jon Snow' to find older gems. Some of those stories have a different feel, less polished maybe but with really bold, character-driven plots that got me into the concept in the first place. I remember one where she was raised in Dorne, and the culture clash was written so vividly.
Don't sleep on SpaceBattles or Sufficient Velocity forums either, especially if you want a Jon Snow who's less about romantic entanglements and more about strategy, logistics, or outright conquest. The discussions in the thread can be half the fun, with readers debating her next move. The downside is they're harder to browse, but the payoff for a certain type of story is huge. My bookmark folder is a mess of links from all these places, honestly.