The August 11, 1991 edition of Wrestling Challenge is a Professional wrestling television show of the World Wrestling Federation. It was taped on July 8, 1991 at the Saddledome in Calgary, Alberta, Canada.
- Numbers in parentheses indicate the length of the match.
- (c) refers to the champion(s) heading into the match.
- Bret Hart defeated Ed Moretti (2:19)
- Sgt. Slaughter (w/ Col. Mustafa & General Adnan) defeated ??? & Vern Siebert in a Two On One Handicap Match (2:34)
- The Rockers (Marty Jannetty & Shawn Michaels) defeated Jim Peterson & The Black Knight (1:04)
- The Warlord (w/ Slick) defeated Randy Thatcher (1:00)
- The Natural Disasters (Earthquake & Typhoon) (w/ Jimmy Hart) defeated Hutch Thomas & Mike Russell (2:42)
- The Undertaker (w/ Paul Bearer) defeated Ray Williams (1:23)
- Dark match: Sid Justice defeated Ted DiBiase
- Dark match: Bret Hart defeated Irwin R. Schyster
- Dark match: The Big Bossman & The Bushwhackers (Butch & Luke) defeated The Nasty Boys (Brian Knobbs & Jerry Sags) & The Mountie
- Dark match: Virgil defeated Paul Roma (8:12)
- Dark match: Jimmy Snuka defeated Louie Spicolli (2:13)
- Dark match: The Beverly Brothers (Beau Beverly & Blake Beverly) defeated Bob Jones & Chi Chi Cruz (2:32)
- Dark match: The Texas Tornado defeated Jim Peterson (4:21)
- Dark match: Jake Roberts defeated Earthquake
- Dark match: The Ultimate Warrior defeated The Undertaker by DQ
- Dark match: Virgil defeated Hutch Thomas
- Dark match: Hulk Hogan (c) defeated Sgt. Slaughter to retain the WWF Championship
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