Roberto Bautista Agut (Spanish pronunciation: [roˈβeɾto βawˈtista aˈɣut]; born 14 April 1988) is a Spanish professional tennis player. He has been ranked as high as world No. 9 by the ATP in singles, achieved on 4 November 2019. His most significant final has been the 2016 Shanghai Masters. His best Grand Slam result is reaching the semifinals at 2019 Wimbledon. Bautista Agut has won twelve ATP singles titles out of twenty three finals, the biggest being the ATP 500 title in Dubai.

As a junior, Bautista Agut compiled a singles win–loss record of 41–13, reaching as high as No. 47 in junior world rankings in July 2006. He did not perform at the level of other future top players.

In 2009, Bautista Agut qualified for the ATP 500 tournament in Valencia, where he lost to Albert Montañés in the first round.

He qualified for his first Grand Slam appearance in the 2012 Australian Open. He lost in the first round to Ricardo Mello in straight sets. On 13 August 2012, Bautista Agut broke into the top 100 for the first time after strong performances in Challenger tournaments. He reached his first ATP-level quarterfinal at St. Petersburg later that year, losing to Fabio Fognini.

His first tournament of 2013, in Chennai, saw him reach his first career ATP final. Bautista Agut defeated world No. 6, Tomáš Berdych, in the quarterfinals in three sets and faced world No. 9, Janko Tipsarević, in the final, to whom he lost despite winning the first set.

Bautista Agut then followed with his then career-best Grand Slam performance at the Australian Open. After defeating Fabio Fognini in a first round five-setter, he fell to Jürgen Melzer in the second round.

At Roland Garros, he reached the third round, after failing to even qualify at the main event for three consecutive occasions. His run ended to local Jérémy Chardy.

At the Topshelf Open, Bautista Agut went through to the quarterfinals, before losing to Xavier Malisse.