UFC Fight Night 103: Rodríguez vs. Penn was a mixed martial arts event produced by the Ultimate Fighting Championship held on January 15, 2017, at Talking Stick Resort Arena in Phoenix, Arizona. A featherweight bout between The Ultimate Fighter: Latin America featherweight winner Yair Rodríguez and former UFC Lightweight and Welterweight Champion B.J. Penn served as the event headliner. This was Penn's first fight in the organization in over two-and-a-half years.
| Actor | Role |
|---|---|
 Yair RodríguezSelf | Self |
 B.J. PennSelf | Self |
 Joe LauzonSelf | Self |
| MMarcin HeldSelf | Self |
 Ben SaundersSelf | Self |
 Court McGeeSelf | Self |
 Sergio PettisSelf | Self |
 John MoragaSelf | Self |
 Drakkar KloseSelf | Self |
 Devin PowellSelf | Self |
| AAugusto MendesSelf | Self |
 Frankie SaenzSelf | Self |
 Aleksei OleinikSelf | Self |
 Viktor PeštaSelf | Self |
 Tony MartinSelf | Self |
 Alex WhiteSelf | Self |
 Nina NunesSelf | Self |
 Jocelyn Jones-LybargerSelf | Self |
 Walt HarrisSelf | Self |
 Chase ShermanSelf | Self |
 Joachim ChristensenSelf | Self |
| BBojan MihajlovicSelf | Self |
| CCyril AskerSelf | Self |
| DDmitry SmolyakovSelf | Self |