Rizin World Grand Prix 2017 Opening Round Part 1 was a mixed martial arts event held by the Rizin Fighting Federation on July 30, 2017 at the Saitama Super Arena in Saitama, Japan.
| Actor | Role |
|---|---|
 Kyoji HoriguchiNot listed | Not listed |
| HHideo TokoroNot listed | Not listed |
 Amir AliakbariNot listed | Not listed |
| TTyler KingNot listed | Not listed |
| GGabi GarciaNot listed | Not listed |
| OOksana GagloevaNot listed | Not listed |
| RReina MiuraNot listed | Not listed |
 Lei'D TapaNot listed | Not listed |
 Tenshin NasukawaNot listed | Not listed |
| KKizaemon SaigaNot listed | Not listed |
| YYusuke YachiNot listed | Not listed |
| SSatoru KitaokaNot listed | Not listed |
 Miyuu YamamotoNot listed | Not listed |
 Cassandra RobbNot listed | Not listed |
| TTakafumi OtsukaNot listed | Not listed |
 Anthony BirchakNot listed | Not listed |
 Khalid TahaNot listed | Not listed |
| KKeita IshibashiNot listed | Not listed |
| SShinju Nozawa-AuclairNot listed | Not listed |
| SSheena BrandenburgNot listed | Not listed |
| KKarl AlbrektssonNot listed | Not listed |
| TTeodoras AukštuolisNot listed | Not listed |