The 2021 I.ČLTK Prague Open was a professional tennis tournament played on outdoor clay courts. It was the 28th (men) and 16th (women) editions of the tournament which was part of the 2021 ATP Challenger Tour and the 2021 ITF Women's World Tennis Tour. It took place in Prague, Czech Republic from 3 to 9 May 2021.
Men's singles main-draw entrants
Seeds CountryPlayerRank1 SeedNorbert Gombos951Yūichi Sugita1092Andrej Martin1103Dennis Novak1114Denis Kudla1175Kamil Majchrzak1236Peter Gojowczyk1327Sumit Nagal1378 1 Rankings are as of 26 April 2021.
Other entrants The following players received wildcards into the singles main draw: Jiří Lehečka Andrew Paulson Michael Vrbenský
The following player received entry into the singles main draw as a special exempt: Renzo Olivo
The following players received entry from the qualifying draw: Zdeněk Kolář Vít Kopřiva Sergiy Stakhovsky Kacper Żuk
Women's singles main-draw entrants
Seeds CountryPlayerRank1 SeedViktória Kužmová1061Jaqueline Cristian1472Barbara Haas1563Elena-Gabriela Ruse1754Çağla Büyükakçay1775Lesley Pattinama Kerkhove1796Rebecca Šramková1967Julia Grabher1978 1 Rankings are as of 26 April 2021.
Other entrants The following players received wildcards into the singles main draw: Nikola Bartůňková Ana Konjuh Linda Nosková Darja Viďmanová
The following player received entry using a protected ranking: Karman Thandi
The following players received entry from the qualifying draw: Anna Bondár Amanda Carreras Johana Marková Jule Niemeier Paula Ormaechea İpek Öz Chantal Škamlová Shalimar Talbi
Champions
Men's singles
Tallon Griekspoor def. Oscar Otte 5–7, 6–4, 6–4.
Women's singles Jule Niemeier def. Dalma Gálfi, 6–4, 6–2
Men's doubles
Marc Polmans / Sergiy Stakhovsky def. Ivan Sabanov / Matej Sabanov 6–3, 6–4.
Women's doubles Anna Bondár / Kimberley Zimmermann def. Xenia Knoll / Elena-Gabriela Ruse, 7–6(7–5), 6–2
References I.ČLTK Prague Open at ITFtennis.com