The 1991 Great American Bash was the third annual Great American Bash professional wrestling pay-per-view event produced by World Championship Wrestling (WCW), and the seventh annual Great American Bash event overall. It was also the first held by WCW alone following its split from the National Wrestling Alliance (NWA) in January 1991. The event took place on July 14, 1991, at the Baltimore Arena in Baltimore, Maryland. This was the fourth Great American Bash held at this venue after the 1988, 1989, and 1990 events.

The original scheduled card of the event was heavily changed. Ric Flair was scheduled to defend the WCW World Heavyweight Championship against Lex Luger in a steel cage match, but Flair quit WCW before the event and was replaced by Barry Windham, with the match being for the vacant championship. Luger defeated Windham to win his first world championship. The final bout of the show was a handicap steel cage match, in which Rick Steiner defeated Arn Anderson and Paul E. Dangerously.