The àdiForlì2021 Città di Forlì II was a professional tennis tournament played on hard courts. It was the first edition of the tournament which was part of the 2021 ATP Challenger Tour. It took place in Forlì, Italy between 29 November and 5 December 2021.
Singles main-draw entrants
Seeds
1 Rankings as of 22 November 2021.
Other entrants
The following players received wildcards into the singles main draw: Francesco Forti Matteo Gigante Luca Nardi
The following players received entry into the singles main draw using protected rankings: Julian Lenz Yannick Maden
The following player received entry into the singles main draw as a special exempt: Evgeny Karlovskiy
The following players received entry into the singles main draw as alternates: Raúl Brancaccio Lucas Miedler
The following players received entry from the qualifying draw: Jonáš Forejtek Jelle Sels Aldin Šetkić Alexey Vatutin
Champions
Singles
Maxime Cressy def. Matthias Bachinger 6–4, 6–2.
Doubles
Antonio Šančić / Tristan-Samuel Weissborn def. Lukáš Rosol / Vitaliy Sachko 7–6(7–4), 4–6, [10–7].