KSW eller Konfrontacja Sztuk Walki er den førende mixed martial arts organisation i Polen.

Det blev grundlagt i 2004 af Martin Lewandowski og Maciej Kawulski.

Der er 6 divisioner inklusive herre- og damedivisioner.

Herreafdelinger:

• Bantamweight (134.5 lbs / 61 kg)
• Featherweight (145.5 lbs / 66 kg)
• Lightweight (154.3 lbs / 70 kg)
• Welterweight (169.8 lbs / 77 kg)
• Middleweight (185.2 lbs / 84 kg)
• Light Heavyweight (205 lbs / 93.0 kg)
• Heavyweight (264.6 lbs / 120 kg)

Women’s divisions:

• Strawweight (114.6 lbs / 52 kg)
• Flyweight (125.7 lbs / 57 kg)