Bonk! is a fictional brand which is responsible for various products in the universe of Valve's first-person, team based, mercenary themed shooter Team Fortress 2. Said company appears both in-game and in the comics, mainly as a producer of soda-related items - apart from the Winger - , from soda can hats and merchandising aluminum bats to soda flavors able to grant perks such as temporary invincibility and guaranteed mini-crits, granting an increase to damage dealt by its consumers, through the manipulation of (inhumanely exaggerated amounts of) radiation.

One of TF2's classes, The Scout, is the only character in the game able to use items from Bonk!, with one of his main catchphrases being, well, Bonk!