The 2019 Amex-Istanbul Challenger was a professional tennis tournament played on hard courts. It was the 32nd edition of the tournament which was part of the 2019 ATP Challenger Tour. It took place in Istanbul, Turkey between 9 and 15 September 2019.
Singles main-draw entrants
Seeds
1 Rankings are as of 26 August 2019.
Other entrants
The following players received wildcards into the singles main draw: Baran Cengiz Marsel İlhan Holger Vitus Nødskov Rune Kirill Saplin Mert Naci Türker
The following players received entry into the singles main draw as alternates: Sander Arends Victor Vlad Cornea Mikhail Elgin Marek Gengel Burak Can Yılmaz
Champions
Singles
Ugo Humbert def. Denis Istomin 6–2, 6–2.
Doubles
Andrey Golubev / Aleksandr Nedovyesov def. Marek Gengel / Lukáš Rosol Walkover.