Chair Entertainment Group, LLC (stylized as ChAIR Entertainment) is an American video game development studio founded in 2005 in Provo, Utah.

ChAIR, largely formed of developers coming off of the development of Advent Rising, released their first game, Undertow, in 2007 for the Xbox Live Arcade. In 2008, Epic Games acquired ChAIR and assisted in the development and publishing of Shadow Complex, another XBLA title based on their Empire property. With the advent of mobile gaming, ChAIR went on to develop the Infinity Blade series before releasing Shadow Complex Remastered in 2015 for the Xbox One, Playstation 4, and PC.

ChAIR's co-founder and creative director, Donald Mustard, was ultimately promoted to be Worldwide Creative Director and later Chief Creative Officer for Epic Games, relegating the studio to a support role on the company's smash-hit, Fortnite.