The striking arts use gloves for a reason. So you don't break you hands. That's incredibly easy to do, even in a friendly sparring session. The only martial arts where you don't "need" gloves are the ones where there is no striking with the hands. Grappling systems, and many-weapons based martial arts would not use padded gloves.
All grappling arts, mma(hey it's not boxing gloves, it's mma gloves.{unless it's striking training, then it's boxing gloves}), and certain traditional martial arts that has sparring(example: Tae Kwon Do{also usually not boxing gloves}).
backyard boxing
no gloves in bjj
Vale Tudo
Bare Knuckle Boxing.
Wrestling, Brazilian Jiu-Jitsu, and Judo
Kyokushin and its offshoots are bare-knuckle, though there's no punches to the head. Modern Pankration is also bare-knuckle I believe, but head strikes are limited to open-hand slaps and palm strikes.
MMA, Olympic Taekwondo, and Combat Sambo use small, open-palmed gloves. Olympic Taekwondo, despite this, will not punch to the head.
You don't use gloves at all in grappling styles like Judo, Brazilian Jiujitsu, Sambo, and submission wrestling.
im trying to find a fighting sport in europe(netherlands) where they dont use boxing gloves.
