Guillermo Rigondeaux Ortiz (Spanish pronunciation: [gi'?e?mo ri?on'do o?'ti?]; born 30 September 1980) is a Cuban professional boxer.
He has held multiple super bantamweight world championships, including the lineal title since 2013, and previously the unified WBA (Super), WBO, and Ring magazine titles between 2013 and 2017.
As of March 2019, Rigondeaux is ranked as the world's best active super bantamweight by The Ring and the Transnational Boxing Rankings Board, and the seventh best active featherweight by BoxRec.
Possessing one of the greatest amateur records of all time, Rigondeaux won consecutive gold medals in the bantamweight division at the 2000 and 2004 Summer Olympics.
He is also a seven-time Cuban national champion at bantamweight (2000–2006), finishing his amateur career with a record of nearly 475 fights with 12 losses; the last of these losses occurring in 2003.
After Rigondeaux's defection in 2009, he turned professional and remained undefeated for almost nine years.
Rigondeaux has been lauded by boxing trainer Freddie Roach as being "probably the greatest talent I've ever seen." He is known for his exceptionally fast hand speed, punching power, counterpunching abilities, and defensive elusiveness.