Ryan Gracie , pronounced Hyan ( August 14, 1974 - December 15, 2007), was a Brazilian mixed martial arts fighter with a black belt in Brazilian Jiu-Jitsu. He was a member of the Gracie family, and the grandson of Carlos Gracie, one of the founders of Brazilian Jiu-Jitsu. The PRIDE organization billed Ryan as the "bad boy" of the family who reputedly gained experience fighting in the streets of Brazil.

Ryan trained with his brother Renzo Gracie, who often served as his cornerman. He also trained Pancrase fighter Gabriel Vella and jiu-jitsu world champion Fabio Leopoldo while in Brazi

Gracie had seven fights in the PRIDE organization, with his first at PRIDE 10 in 2000 and his most recent at PRIDE Shockwave 2004. In interviews in 2004, Gracie expressed a strong interest in fighting Kazushi Sakuraba and Hidehiko Yoshida. Sakuraba, known as the "Gracie Hunter" for his many victories over the Gracie family, earlier defeated Ryan with a decision win in 2000.

Ryan was arrested twice due to his aggressive behavior. In 2000, he was arrested for stabbing someone at a Rio de Janeiro nightclub. On 14 December 2007 he was arrested for stealing a car (in which he ended up injuring a 76-year-old man's finger with a knife) and attempting to steal another car and a motorcycle.

The next day at approximately 7:00am he was found dead in his jail cell apparently due to the effect of a combination of legally prescribed drugs. He tested positive for an unknown anti-anxiety drug (supposedly given to him by the doctor who was either present or in the area of the jail in which he was being detained).