| King of Kings Tournament 1999 | |
| Promotion: | Fighting Network Rings |
| Date: | October 28, 1999 - February 26, 2000 |
| City: | Tokyo and Osaka |
The King of Kings Tournament 1999 was a series of three separate mixed martial arts events held by the Fighting Network Rings (RINGS). The tournament took place in both Tokyo and Osaka between October 28, 1999 and February 26, 2000. The tournament was the first of two King of Kings tournaments. The tournament matched up 32 of the best fighters from nine different countries.
The tournament had two qualifying events: King of Kings 1999 Block A and King of Kings 1999 Block B. The fighters who advance from the qualifying events would compete in the King of Kings 1999 Final. The fights would consist of two five-minute rounds and, as in all RINGS bouts, no striking was allowed to the head of a grounded opponent.[1]
The first event of the tournament took place on October 28, 1999 at the Yoyogi National Stadium in Tokyo, Japan.[2]
The second event of the tournament took place on December 22, 1999 at the Osaka Prefectural Gymnasium in Osaka, Japan.[3]
The third and final event of the tournament took place on February 26, 2000 at the Nippon Budokan in Tokyo, Japan.[4]