IWRG often works together with other wrestling promotions, booking their wrestlers on IWRG shows and sending IWRG wrestlers to work for the other promotions. They also co-promote events, recognize non-IWRG championships and at times allow them to be defended on IWRG shows.
Último Dragón Gym/Toryumon Mexico IWRG was affiliated with
Último Dragón and
Toryumon Mexico (Ultimo Dragon Gym) from the time of IWRG's creation until 2001. The early Toryumon Mexico shows were co-promoted by IWRG and Último Dragón in Naucalpan and students regularly worked on IWRG s shows.
CIMA,
SUWA,
Yasushi Kanda,
Susumu Mochizuki and
Magnum Tokyo have all held IWRG championships through the working relationship.
Consejo Mundial de Lucha Libre IWRG developed a talent agreement with
Consejo Mundial de Lucha Libre (CMLL) in the early 2000s, which allowed them to use CMLL talent regularly, as well as being used by CMLL as a sort of developmental territory for young wrestlers. The two promotions had a falling out in late 2007, over IWRG booking
El Hijo del Santo on their shows, in disregard of CMLL having stated that did not want any of their associates to use Hijo del Santo on their shows.
Asistencia Asesoría y Administración During a show on April 29, 2010
Asistencia Asesoría y Administración (AAA) wrestler
Silver King showed up for the show, allegedly to promote a movie, to signal the beginning of IWRG and AAA working together for the first time.
Pro Wrestling Noah On December 5, 2019, it was announced that IWRG and
Pro Wrestling Noah had entered into a talent-sharing partnership. == Roster ==