| IWRG 23rd Anniversary Show | |||
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 Poster for the event advertising the 5 steel cage matches | |||
| Date | January 1, 2019 | ||
| City | Naucalpan, State of Mexico | ||
| Venue | Arena Naucalpan | ||
| Event chronology | |||
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| IWRG Anniversary Show chronology | |||
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The IWRG 23rd Anniversary Show is a major annual lucha libre supercard produced and scripted by the Mexican International Wrestling Revolution Group (IWRG) professional wrestling promotion that took place on January 1, 2019. The show was held in Arena Naucalpan, Naucalpan, State of Mexico, which is IWRG's primary venue. As the name indicates the event commemorates the anniversary of IWRG, which was founded on January 1, 1996.
All matches on the show were held inside a steel cage match, for some matches combining that stipulation with a second stipulation as well. In the main event Máscara Año 2000 Jr. defeated Toscano in a Lucha de Apuestas, or "bet match", and as a result Toscano was shaved bald. Also on the show Los Oficiales (Oficial 911 and Oficial AK-47) won the IWRG Intercontinental Tag Team Championship from Capo del Norte and Capo del Sur in a three-way match where Heddi Karaoui and Zumbi managed to retain their TWS Tag Team Championship. Dragon Bane successfully defended the IWRG Reyes del Aire championship against Rey Horus and in the opener Atomic Star defeated Güero in a "Battle of the Schools" battle royal, which meant Güero had all his hair shaved off.