2020 Amex-Istanbul Challenger

The 2020 Amex-Istanbul Challenger was a professional tennis tournament played on hard courts. It was the 33rd edition of the tournament which was part of the 2020 ATP Challenger Tour. It took place in Istanbul, Turkey between 19 and 25 October 2020.

Seeds

 * 1 Rankings are as of 12 October 2020.

Other entrants
The following players received wildcards into the singles main draw:
 * 🇹🇷 Altuğ Çelikbilek
 * 🇹🇷 Marsel İlhan
 * 🇹🇷 Ergi Kırkın

The following players received entry from the qualifying draw:
 * Borna Gojo
 * 🇫🇷 Tristan Lamasine
 * 🇺🇸 Mackenzie McDonald
 * Nino Serdarušić

The following players received entry as lucky losers:
 * 🇷🇺 Teymuraz Gabashvili
 * 🇷🇺 Alexey Vatutin

Singles

 * 🇧🇾 Ilya Ivashka def. 🇸🇰 Martin Kližan 6–1, 6–4.

Doubles

 * Ariel Behar / 🇪🇨 Gonzalo Escobar def. 🇺🇸 Robert Galloway / 🇺🇸 Nathaniel Lammons 4–6, 6–3, [10–7].