ROH Honor United: London was a professional wrestling event produced by Ring of Honor (ROH). It took place on May 26, 2018 at the Crystal Palace National Sports Centre in Crystal Palace, Greater London, England.
- Numbers in parentheses indicate the length of the match.
- (c) refers to the champion(s) heading into the match.
- Silas Young (c) defeats Hiroshi Tanahashi and Punishment Martinez and SANADA (11:52) in a Four-Corner Survival Match to retain the ROH World Television Championship
- The Kingdom (Matt Taven, TK O'Ryan & Vinny Marseglia) (c) defeat BULLET CLUB (Hangman Page, Matt Jackson & Nick Jackson) and SoCal Uncensored (Christopher Daniels, Frankie Kazarian & Scorpio Sky) (22:20) in a Three-Way Match to retain the ROH World Six-Man Tag Team Championship
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