Tatiana Búa (Spanish pronunciation: [ta'tjana 'ßu.a]; born 19 January 1990) is an Argentine tennis player.
Búa has won four singles and 24 doubles titles on the ITF Women's Circuit.
On 17 August 2009, she reached her best singles ranking of world No.
372.
On 7 July 2014, she peaked at No.
119 in the WTA doubles rankings.
Búa was born in Bragado, and made her WTA Tour debut at the 2014 Grand Prix SAR La Princesse Lalla Meryem, partnering Daniela Seguel in doubles.
The South American pair won their first round match against Nicole Clerico and Nikola Franková, only to lose in the quarterfinals to the top seeds Darija Jurak and Megan Moulton-Levy.
However, they reached their first final in Strasbourg the following month, losing to the three-time Grand Slam-finalist pairing of Ashleigh Barty and Casey Dellacqua.Playing for Argentina at the Fed Cup, Búa has a win–loss record of 0–2.