Which record label did Jay-Z co-found in 2008?

The record label Jay-Z co-founded in 2008 was Roc Nation. Founded on April 1, 2008, Roc Nation began as a broad entertainment company associated with music management, recording, publishing, sports, and media rather than functioning only as a traditional record label.

Jay-Z created Roc Nation after his earlier business relationship with Roc-A-Fella Records and after serving as president and chief executive officer of Def Jam Recordings from 2004 to 2007. Roc Nation's first signed artist was J. Cole, who later became one of the label's most successful acts. The company also developed partnerships with major distributors, including Sony Music and later Universal Music Group.

The wording can cause a minor mix-up because Jay-Z is closely associated with Roc-A-Fella Records, which he co-founded in the 1990s with Damon Dash and Kareem “Biggs” Burke. Roc Nation is the later 2008 venture. Jay-Z also launched the clothing company Rocawear and co-founded the 40/40 Club, but neither is the record label asked about here.