ROH Mass Hysteria 2019

 was a professional wrestling event produced by Ring of Honor (ROH) that took place on July 21, 2019 at the Lowell Memorial Auditorium in Lowell, Massachusetts.

Results

 * Numbers in parentheses indicate the length of the match.
 * (c) refers to the champion(s) heading into the match.
 * The Briscoes (Jay Briscoe & Mark Briscoe) (c) defeated The Bouncers (Brian Milonas & The Beer City Bruiser) to retain the ROH World Tag Team Championship (9:10)
 * Christian Casanova defeated Jimmy Preston (5:40)
 * Silas Young defeated PJ Black (6:40)
 * Tasha Steelz defeated Angelina Love and Karissa Rivera in a Three Way Match (6:15)
 * Shane Taylor (c) defeated Eli Isom to retain the ROH World Television Championship (13:05)
 * Kenny King defeated Dragon Lee (13:05)
 * Villain Enterprises (Marty Scurll & PCO) (w/ Flip Gordon) defeated Lifeblood (Bandido & Mark Haskins) (w/ Tracy Williams) (13:25)
 * Rush defeated Dalton Castle by DQ in a Grudge Match (5:05)
 * Alex Shelley, Jay Lethal & Jonathan Gresham defeated The Kingdom (Matt Taven, TK O'Ryan & Vinny Marseglia) in a Six Man Tag Team Match (18:20)