K-1 World Grand Prix 2008 in Seoul Final 16 was a martial arts event held by the K-1 on Saturday September 27, 2008 at the Olympic Gymnastics Arena in Seoul, Korea. It was the Final Elimination tournament for top sixteen fighters. The winners qualified for the K-1 World GP 2008 Final held on December 6, 2008, at Yokohama Arena, Japan.

K-1 World MAX 2008 World Championship Tournament - Final - was a martial arts event promoted by the K-1 organization. It took place on Wednesday, October 1, 2008 at the Nippon Budokan Arena in Tokyo, Japan. It was the 7th annual K-1 World Max World Championship Final, featuring four quarter final winners of K-1 World MAX 2008 Final 8 held on July 7, 2008 in Tokyo, Japan. The card also included a couple of tournament reserve bouts, two Superfights between Takayuki Kohiruimaki vs Joerie Mes and Nieky Holzken vs. Virgil Kalakoda, the ISKA World Lightweight Title Match plus the quarterfinals in K-1's new Koshien King of U-18 series. The four quarter final winners of the K-1 Koshien bouts would qualify for the semi-finals at the Dynamite!! 2008 event.