Jiří Procházka is a Czech mixed martial artist. He currently competes in the Light Heavyweight division in the Ultimate Fighting Championship (UFC). He was the inaugural Rizin Fighting Federation Light Heavyweight Champion and the inaugural Gladiator Fighting Championship Light Heavyweight Champion. Procházka is well-known as a devoted follower of the Bushido principles, the samurai moral values and the Miyamoto Musashi's teachings and philosophy, especially the Musashi's The Book of Five Rings, which Procházka considered as a life-changing book for him.