Raging Fighter, known in Japan as Outburst (アウトバースト) is a 1993 fighting video game developed and published by Konami for the Nintendo Game Boy. It was first released in Japan on March 26, 1993, and later released in North America and Europe in June 1993.

Raging Fighter plays similarly to other 2D versus fighting games during its release, which the player's character fights against his or her opponent in best two-out-of-three matches in a single player tournament mode with the computer or against another human player. However, unlike most modern-fighting games released at the time, instead of three to six buttons like in most other modern-fighting games, there are two buttons: one for punching, the other for kicking. Depending on what direction the player presses when he or she punches or kicks, the player can throw a different punch or kick with different properties that would be useful in different situations. For instance, if the player is crouching, he or she has three low kicks to utilize. This was a method Konami used to seriously make the most out of the Game Boy's two buttons.

There are four different game modes: Practice, Story, Tournament and Versus. There are also seven playable characters, each individually rated in strength, speed, defense, mobility, and endurance. An in-game meter can be filled out in the one-player tournament mode by not using long-range moves against the opponents. Depending on their skill throughout the tournament, the player can be rewarded with anything from a S-rank to an E-rank.