Knockout Kings 2000 (known as Box Champions 2000 in Germany) is a video game developed by Black Ops Entertainment and published by EA Sports for Nintendo 64, PlayStation, and Game Boy Color (the latter as simply Knockout Kings) in 1999.

[5][6][7] Adam Pavlacka of NextGen said that the former console version's "biggest strength lies in its realism.

"[4] In one review, Air Hendrix of GamePro called the Nintendo 64 version "a true title contender that every N64 gamer should check out.

"[28][b] In another, however, he changed his tune and said of the same console version, "There's a lot of flash and name recognition going on here, but this fighter doesn't have the iron will necessary to be a true champion.

"[30][d] The Burn Out said in another review that the PlayStation version "achieves its goal of creating a realistic boxing experience that's better than the original.