2021 Antalya Challenger III

The 2021 Antalya Challenger III was a professional tennis tournament played on clay courts. It was the third edition of the tournament which was part of the 2021 ATP Challenger Tour. It took place in Antalya, Turkey between 29 November and 5 December 2021.

Seeds

 * 1 Rankings as of 22 November 2021.

Other entrants
The following players received wildcards into the singles main draw:
 * 🇹🇷 Yankı Erel
 * 🇹🇷 Cem İlkel
 * Aleksandre Metreveli

The following players received entry into the singles main draw as alternates:
 * Hsu Yu-hsiou
 * 🇰🇷 Lee Duck-hee

The following players received entry from the qualifying draw:
 * Tiago Cação
 * 🇺🇸 Oliver Crawford
 * Mick Veldheer
 * 🇩🇪 Louis Wessels

Singles

 * Nuno Borges def. 🇬🇧 Ryan Peniston 6–4, 6–3.

Doubles

 * 🇮🇹 Riccardo Bonadio / 🇮🇹 Giovanni Fonio def. Hsu Yu-hsiou /  Tseng Chun-hsin 3–6, 6–2, [12–10].