K-1 Grand Prix '99 final round was a martial arts event promoted by the K-1 organization.

The eight finalists had all qualified via elimination fights at the K-1 World Grand Prix '99 opening round.

In total there were twenty fighters at the event, representing eight countries.

The tournament winner was Ernesto Hoost who defeated Mirko Cro Cop in the final by third round knockout.

This victory was Hoost's second of four K-1 Grand Prix wins, while Cro Cop was making his first and penultimate K-1 Grand Prix Final appearance before winning it 14 years later.