Carlos Alberto Ramon Rios (born 14 April 1971) is an Argentine professional boxer.
In 1997 Rios fought Luisito Espinosa for the WBC featherweight title.
In 1999, Rios was defeated by Floyd Mayweather Jr. for the WBC super featherweight title.
[1] He later fought Acelino Freitas in 2000 for the WBO super featherweight title.
The fight ended in a technical knockout after Rios' corner threw in the towel.