Gearbox Software is an American video game development company based in Frisco, Texas. It was established as a limited liability company in February 1999 by five developers formerly of Rebel Boat Rocker. Randy Pitchford, one of the founders, serves as president and chief executive officer. Gearbox initially created expansions for the Valve game Half-Life, then ported that game and others to console platforms. In 2005, Gearbox launched its first independent set of games, Brothers in Arms, on console and mobile devices. It became their flagship franchise and spun off a comic book series, television documentary, books, and action figures. Their second original game series, Borderlands, commenced in 2009, and by 2015 had sold over 26 million copies. The company also owns the intellectual property of Duke Nukem and Homeworld.

Randy Pitchford is an American businessman. He co-founded the video game development studio Gearbox Software in 1999 and was president and CEO for the company until 2021, upon which he became CEO and president of Gearbox's parent company, The Gearbox Entertainment Company. In 2016, Pitchford became the owner of the Academy of Magical Arts publication Genii magazine. Pitchford purchased the Hollywood Magic Castle in April 2022.