Tuba Buyukustun (Tuba Büyüküstün) (born on July 5 1982 in Istanbul) is a Turkish film actress. She graduated from Dogus Science High School and studied at the department of the decoration of stage and costume at the Mimar Sinan University. When she was at University she started to act in advertisements. After she met Tomris Giritlioglu, she started acting. She played in the last four episodes of series "Sultan Makami". In 2004 she became very famous with "Cemberimde Gul Oya". In this series she was called "Zarife" and it was directed by Cagan Irmak. In the same year she shared the leading role with Sevket Coruh and Yetkin Dikinciler in the TV film "Gulizar". Furthermore she acted in the movie “Babam ve Oglum" (My Father And My son) which was also directed by Cagan Irmak.

In the series "Ihlamurlar Altında", which was directed by Aydin Bulut, she acted with Bulent Inal and Sinan Tuzcu. After this, she acted with Murat Yildirim in “Asi”, which was shooted in Antakya. In this time, "Ihlamurlar Altında" was started to show in MBC and so she gets very famous in Middle East, too. At least, she is playing the character "Esma" in her first leading role in the movie "Yüreğine Sor", which will have its premiere in March 2010.