Totally obsessed with name etymology, I love how Naruto borrows from Japanese folklore — so here's the scoop in plain terms. The Japanese word for 'fox' is 'kitsune' (狐), and in the world of Naruto the fox spirit motif shows up mainly as the tailed beast called the Nine-Tails. That beast is commonly referred to as the 'Kyūbi' (九尾, literally 'nine tails'), but a Kyūbi is a kind of kitsune in folklore terms: a powerful fox spirit with many tails. The creature fans usually call 'Kurama' is the individual name of that Nine-Tails, but Kurama itself doesn’t literally translate to 'fox' — instead it’s the proper name of that specific kitsune-like entity.
If you’re asking which character names literally mean 'fox' in Japanese, the honest, slightly nerdy answer is that none of the major protagonists or side characters have a given name that directly translates to the single word 'kitsune.' Instead, what you get are characters who are associated with a fox because of the beast sealed inside them: Naruto Uzumaki (as the Nine-Tails’ jinchūriki), Kushina Uzumaki (former jinchūriki), and Minato Namikaze (who sealed the Kyūbi) are all tied to that kitsune motif. The series also uses the terms 'Kyūbi' and 'Nine-Tails' to signal the fox connection rather than renaming someone literally 'Fox.'
I like this subtlety — it preserves the mystique. Instead of going full-on literal and naming someone 'Kitsune,' the show weaves fox imagery into personalities, powers, and plotlines: slyness, trickery, wisdom, destructive power, and the slow softening of what starts as a fearsome spirit. That layering makes the fox motif feel earned and culturally rooted, and I always get a little thrill spotting folk-tale echoes in character arcs and fights.