Pedro Diogo Tavares Martins de Oliveira (also Pedro Oliveira, born January 1, 1988) is a Portuguese swimmer, who specialized in backstroke and butterfly events.
He is a two-time Olympian (2008 and 2012), and a double silver medalist in the 200 m backstroke at the European Junior Championships (2005 and 2006).
He also holds four Portuguese records, two national titles, and has produced a stellar performance at the NCAA Swimming Championships, earning five All-American titles as a member of Louisville Cardinals.