Christopher Vincent Metzen (born November 22, 1973) is an American game designer, artist, voice actor, and author known for his work creating the fictional universes and scripts for Blizzard Entertainment's three major award-winning media franchises: Warcraft, Diablo and StarCraft. Metzen was hired by Blizzard Entertainment as an animator and an artist, his first work for the company was with the video game Justice League Task Force.

Metzen was the Senior Vice President of Story and Franchise Development at Blizzard Entertainment and assisted the company's projects by providing voice talent for a number of characters, most notably the orc character Thrall, as well as contributing to artistic character design. Metzen retired in September 2016 to spend more time with his family, but returned to the company as a creative advisor in December 2022. He was made the executive creative director of Warcraft in September 2023.

In his most recent work, Metzen co-authored graphic novels, Transformers: Autocracy and Transformers Monstrosity with author Flint Dille and artist Livio Ramondelli.

Metzen began his career in design after applying to Blizzard Entertainment, then known as Chaos Studios, on the recommendation of a friend impressed by his napkin doodle of a dragon. He was quickly recruited by the company, although Metzen states that at the time he did not really know what Blizzard Entertainment dealt with, assuming it was a graphic design studio rather than a video game developer.

Metzen's first work for the company was with the game Justice League Task Force, in which he provided artwork and character animation. Around the same time, Metzen also contributed to 1994's Warcraft: Orcs and Humans by working on artwork, illustrations and the game's documentation. Later video games by Blizzard Entertainment would frequently include Metzen's work in manual design, illustration and concept art. However, Metzen's role in developing later Warcraft games increased significantly with 1995's Warcraft II: Tides of Darkness, which gave him the opportunity to work on the game's fantasy-based fictional universe in addition to designing the game's various scenarios and missions.

In 1996, Blizzard Entertainment launched its second major franchise with the role-playing game Diablo. Diablo's fictional universe was created by David Brevik, Metzen, and Bill Roper. Metzen also provided voice acting for some of the game's characters. On occasion, Metzen would provide voice talent for later video games. In 1998 he took the role of lead designer on the science fiction strategy game StarCraft. Along with James Phinney, Metzen again provided the game's extensive story and script, as well as organizing the voice casting for the game. In 1999, Metzen wrote a short story set in the StarCraft universe with fellow Blizzard Entertainment employee Sam Moore. The story, entitled Revelations, was published in the spring issue of Amazing Stories with cover artwork by Samwise Didier. Returning to the Diablo series in 2000 with Diablo II, Metzen worked on the game's story, script and artwork. In 2001, he published a novel set in the Warcraft universe, entitled Of Blood and Honor.

With 2002's Warcraft III: Reign of Chaos, Metzen was the creative director, a role he would hold in all of Blizzard's later video games, and provided the game's story concept and script. Metzen's work with 2004's massively multiplayer online role-playing game World of Warcraft was not as extensive as his earlier work, but he still contributed with script writing, artwork and voice work.

Metzen announced in early 2005 that he was working on a graphic novel series independent of Blizzard Entertainment. The series, entitled Soldier: 76, is set in a second American civil war in 2010, with increased domestic and global terror threats and the increase in power for the US federal government over that of local state governments serving as a background. Metzen wrote the series' script, while Brazilian artist Max Velati was responsible for the illustration and painting of the book. Soldier: 76 would later appear as a character in Overwatch, Blizzard's online first-person shooter game, released in May 2016.