Don Daglow is an American computer and video game designer, programmer, and producer. He is best known for pioneering simulation games, creating the first online multiplayer role-playing game with graphics, and founding game developer Stormfront Studios.

While studying playwriting at Pomona College in Claremont, California, Daglow discovered his talent for writing computer programs. During the 1970s, Daglow created games such as Baseball (1971), the first interactive computer baseball game; Dungeon (1975), the first computer role-playing game; and other titles freely shared via university mainframe computers. In 1980, Daglow started at Mattel Electronics as one of the original Intellivision programmers. Daglow produced Utopia, a groundbreaking simulation game (also called a “god game”) in 1982. At Mattel, Daglow also worked on Intellivision World Series Baseball (1983), a game which incorporated multiple camera angles into the game display. Daglow joined Electronic Arts in 1983, designing more than a dozen titles. He moved to Brøderbund a few years later, notably signing the original distribution deal for Will Wright’s Sim City (1989).

Daglow founded Stormfront Studios, Inc. in 1988 in San Rafael, CA. Originally called Beyond Software but renamed in 1991, the company had placed on the Inc. 500 list of fast-growing companies three times by 1995. Neverwinter Nights (1991-1997), the first graphical MMORPG and Stronghold (1993), the first 3D real-time-strategy game, helped earn Daglow the title of the only games industry pioneer to create ground-breaking games in four genres (role playing, sports, simulation and god games, and real-time strategy). Other innovative and popular titles include Quantum Space (1989), the original play-by-email game to be offered by a major online service; Treasures of the Savage Frontier (1992), the first game where an NPC could fall in love with a player character; Tony La Russa Baseball games (1991-1997); The Lord of the Rings: The Two Towers (2002); and Eragon (2006). Daglow served as president and CEO until the company closed in 2008, by which time Stormfront Studios had sold over fourteen million copies of games.

In 2011, Don Daglow established Interactive Entertainment in Sausalito, CA, as a mobile and social games studio. As of 2019, Daglow continues to consult with game publishers and developers as well as perform speaking engagements.

Daglow has received many honors, including a Technology and Engineering Emmy award and an Academy of Interactive Arts and Sciences Achievement Award. His role in establishing simulation and online multiplayer role-playing games has greatly shaped the modern video game industry.