The 2019 İstanbul Cup (also known as the TEB BNP Paribas İstanbul Cup for sponsorship reasons) was a tennis tournament played on outdoor clay courts.

It was the 12th edition of the İstanbul Cup, and part of the WTA International tournaments of the 2019 WTA Tour.

It took place in Istanbul, Turkey, from 22 through 28 April 2019.

[1] The following players received wildcards into the singles main draw: The following players received entry from the qualifying draw: The following players received entry as lucky losers: The following pairs received wildcards into the doubles main draw: