Guillermo Molina Ríos (born 16 March 1984) is a Spanish water polo player who competed for the Spain men's national water polo team in four consecutive Summer Olympics (2004 Athens, 2008 Beijing, 2012 London and 2016 Rio.

[2] Afterwards he competed for Italy men's national water polo team in the 2018 Men's European Water Polo Championship.

He helped Italian water polo club Pro Recco win the LEN Champions League in 2009–10 and 2011–12 season.

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