2021 JC Ferrero Challenger Open

The 2021 JC Ferrero Challenger Open was a professional tennis tournament played on clay courts. It was the fourth edition of the tournament which was part of the 2021 ATP Challenger Tour. It took place at the Ferrero Tennis Academy in Villena, Alicante, Spain, between 11 and 17 October 2021.

Seeds

 * 1 Rankings are as of 4 October 2021.

Other entrants
The following players received wildcards into the singles main draw:
 * 🇪🇸 Nicolás Álvarez Varona
 * 🇪🇸 Feliciano López
 * 🇺🇸 Emilio Nava

The following players received entry into the singles main draw as alternates:
 * 🇦🇹 Lucas Miedler
 * 🇺🇸 Nicolas Moreno de Alboran
 * 🇺🇦 Vladyslav Orlov
 * 🇩🇪 Mischa Zverev

The following players received entry from the qualifying draw:
 * 🇮🇳 Sriram Balaji
 * 🇺🇦 Georgii Kravchenko
 * 🇦🇷 Santiago Rodríguez Taverna
 * 🇰🇿 Denis Yevseyev

Singles

 * 🇫🇷 Constant Lestienne def. 🇫🇷 Hugo Grenier 6–4, 6–3.

Doubles

 * 🇺🇦 Denys Molchanov / 🇪🇸 David Vega Hernández def. Romain Arneodo / 🇦🇺 Matt Reid 6–4, 6–2.