Cliff Bleszinski (born 1975) is a US videogame designer who worked for Epic Games. Along with Arjan Brussee he created the Jazz Jackrabbit series and would later become one of the lead designers of both the Unreal and Gears of War series.
Cliff joined Epic in 1992, where his first work was Dare to Dream, which lead him to team up with Arjan to work on Jazz Jackrabbit. After 20 years in the company, Cliff left the company in 2012, originally intending to retire from videogames production. In 2014 he came out of retirement and co-founded a new studio alongside Arjan, Boss Key Productions, where they worked on the multiplayer arena FPS game LawBreakers which was eventually launched in 2017. In 2018 Boss Key Productions closed it's doors, and Cliffy retired from videogames production permanently.