2021 Amex-Istanbul Challenger

The 2021 Amex-Istanbul Challenger was a professional tennis tournament played on hard courts. It was the 34th edition of the tournament which was part of the 2021 ATP Challenger Tour. It took place in Istanbul, Turkey between 18 and 24 January 2021.

Seeds

 * 1 Rankings are as of 11 January 2021.

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

The following players received entry from the qualifying draw:
 * 🇬🇧 Jay Clarke
 * 🇧🇷 João Menezes
 * 🇫🇷 Arthur Rinderknech
 * 🇨🇿 Lukáš Rosol

The following player received entry as a lucky loser:
 * 🇺🇿 Denis Istomin

Singles

 * 🇫🇷 Arthur Rinderknech def. 🇫🇷 Benjamin Bonzi 4–6, 7–6(7–1), 7–6(7–3).

Doubles

 * 🇸🇪 André Göransson / David Pel def. 🇬🇧 Lloyd Glasspool / 🇫🇮 Harri Heliövaara 4–6, 6–3, [10–8].