"ONE on TNT 3" was a combat sport event held by ONE Championship on April 7, 2021 at the Singapore Indoor Stadium in Kallang, Singapore. It was first aired on April 21, 2021.
| Actor | Role |
|---|---|
 John LinekerSelf | Self |
 Troy WorthenSelf | Self |
 Yuya WakamatsuSelf | Self |
 Reece McLarenSelf | Self |
 Ok Rae YoonSelf | Self |
 Marat GafurovSelf | Self |
| MMiao Li TaoSelf | Self |
 Ryuto SawadaSelf | Self |
 Nieky HolzkenSelf | Self |
 John Wayne ParrSelf | Self |