2021 Biella Challenger Indoor II

The 2021 Biella Challenger Indoor II was a professional tennis tournament played on hard courts. It was the 2nd edition of the tournament which was part of the 2021 ATP Challenger Tour. It took place in Biella, Italy between 15 and 21 February 2021.

Seeds

 * 1 Rankings are as of 8 February 2021.

Other entrants
The following players received wildcards into the singles main draw:
 * 🇮🇹 Stefano Napolitano
 * 🇮🇹 Luca Nardi
 * 🇮🇹 Giulio Zeppieri

The following player received entry into the singles main draw as a special exempt:
 * 🇺🇦 Illya Marchenko

The following players received entry into the singles main draw as alternates:
 * Ernests Gulbis
 * 🇸🇰 Lukáš Lacko

The following players received entry from the qualifying draw:
 * 🇮🇹 Raúl Brancaccio
 * Blaž Kavčič
 * 🇫🇷 Constant Lestienne
 * 🇮🇹 Matteo Viola

The following player received entry as a lucky loser:
 * 🇯🇵 Hiroki Moriya

Singles

 * 🇰🇷 Kwon Soon-woo def. 🇮🇹 Lorenzo Musetti 6–2, 6–3.

Doubles

 * Hugo Nys / 🇩🇪 Tim Pütz def. 🇬🇧 Lloyd Glasspool / 🇫🇮 Harri Heliövaara 7–6(7–4), 6–3.