17-18 August 2021
TSG Hoffenheim – Valur
Referee: Andromachi Tsiofliki (GRE, photo)
Assistant Referee 1: Georgia Komisopulou (GRE)
Assistant Referee 2: Irina Pozdejeva (LTU)
Fourth Official: Rassa Imanalijeva (LTU)
Zurich – Milan
Referee: Kateryna Usova (UKR)
Assistant Referee 1: Iryna Petrova (UKR)
Assistant Referee 2: Emily Carney (ENG)
Fourth Official: Abigail Marriott (ENG)
Breidablik – KI
Referee: Emanuela Rusta (ALB)
Assistant Referee 1: Erinda Kume (ALB)
Assistant Referee 2: Line Nymoen (NOR)
Fourth Official: Henrikke Nervik (NOR)
Kharkiv – NSA
Referee: Louise Thompson (NIR)
Assistant Referee 1: Victoria Finlay (NIR)
Assistant Referee 2: Martuna Koziel (POL)
Fourth Official: Ewa Augustyn (POL)
Glasgow City – Birkirkara
Referee: Ifeoma Kulmala (FIN)
Assistant Referee 1: Alisa Levaelampi (FIN)
Assistant Referee 2: Ivona Pejic (CRO)
Fourth Official: Sabina Bolic (CRO)
Sarajevo – Racing Union
Referee: Jurgita Macikunyte (LTU)
Assistant Referee 1: Ugne Smitaite (LTU)
Assistant Referee 2: Linda Schmid (SUI)
Fourth Official: Michelle Schmoelzer (SUI)
Spartak Subotica – Peamount
Referee: Ana Tarteleac (ROU)
Assistant Referee 1: Daniela Constantinescu (ROU)
Assistant Referee 2: Nikol Safrankova (CZE)
Fourth Official: Lucie Sulcova (CZE)
Minsk – Rosenborg
Referee: Alexandra Deligianni (GRE)
Assistant Referee 1: Zoi Papadopoulou (GRE)
Assistant Referee 2: Anita Vad (HUN)
Fourth Official: Eszter Urban (HUN)
Arsenal – Okzhetpes
Referee: Katarzyna Lisiecka-Sek (POL)
Assistant Referee 1: Katarzyna Wojs (POL)
Assistant Referee 2: Lenka Pavlackova (SVK)
Fourth Official: Petra Pavlikova (SVK)
Servette – Glentoran
Referee: Zulema Gonzalez Gonzalez (ESP)
Assistant Referee 1: Matilde Esteves-Garcia (ESP)
Assistant Referee 2: Gordana Katusic (CRO)
Fourth Official: Jelena Pejkovic (CRO)
Brondby – Kristianstad
Referee: Merima Celik (BIH)
Assistant Referee 1: Merima Homarac (BIH)
Assistant Referee 2: Ivana Jovanovic (SRB)
Fourth Official: Jelena Cvetkovic (SRB)
Anderlecht – Hayasa
Referee: Alina Pesu (ROU)
Assistant Referee 1: Petruta Iugulescu (ROU)
Assistant Referee 2: Karolin Kaivoja (EST)
Fourth Official: Reelika Turi (EST)
Juventus – Kamenica Sasa
Referee: Alexandra Ponomareva (RUS)
Assistant Referee 1: Ekaterina Pavlenko (RUS)
Assistant Referee 2: Rocio Puente Pino (ESP)
Fourth Official: Maria Martinez Madrona (ESP)
BIIK Shymkent – Slovan Bratislava
Referee: Katalin Sipos (HUN)
Assistant Referee 1: Noemi Hegedüs-Barath (HUN)
Assistant Referee 2: Francesca Di Monte (ITA)
Fourth Official: Valentina Finzi (ITA)
Apollon – Dinamo
Referee: Olivia Tschon (AUT)
Assistant Referee 1: Lena Hirtl (AUT)
Assistant Referee 2: Giulia Tempestilli (ITA)
Fourth Official: Maria Marotta (ITA)
Gintra – Flora
Referee: Cristina Trandafir (ROU)
Assistant Referee 1: Miahela Tepusa (ROU)
Assistant Referee 2: Yordanka Korcheva (BUL)
Fourth Official: Galina Echeva (BUL)
Pomurje – RFS
Referee: Araksya Saribekyan (ARM)
Assistant Referee 1: Kristine Griogryan (ARM)
Assistant Referee 2: Ines Appelmann (GER)
Fourth Official: Angelika Soeder (GER)
SL Benfica – Qiryat Gat
Referee: Tanja Subotic (SVN)
Assistant Referee 1: Sladjana Jovicic (SVN)
Assistant Referee 2: Sedef Aktan (TUR)
Fourth Official: Neslihan Muratdagi (TUR)
Valerenga – Mitrovica
Referee: Simona Ghisletta (SUI)
Assistant Referee 1: Emilie Aubry (SUI)
Assistant Referee 2: Stasa Spur (SVN)
Fourth Official: Aleksandra Cesen (SVN)
PAOK – Anenii Noi
Referee: Ainara Acevedo Dudley (ESP)
Assistant Referee 1: Rita Cabanero Pompo (ESP)
Assistant Referee 2: Melissa Burgin (ENG)
Fourth Official: Kirsty Dowle (ENG)
Levante – Celtic
Referee: Vera Opeykina (RUS)
Assistant Referee 1: Ekaterina Chernova (RUS)
Assistant Referee 2: Zuzana Spindlerova (CZE)
Fourth Official: Veronika Kovarova (CZE)
PSV – Lokomotiv Moskva
Referee: Sofik Torosyan (ARM)
Assistant Referee 1: Liana Grigoryan (ARM)
Assistant Referee 2: Gerda Eidinzonaite (LTU)
Fourth Official: Justina Lavrenovaite (LTU)
Olimpia Cluj – Aland
Referee: Ioanna Allayiotou (CYP)
Assistant Referee 1: Despina Demosthenous (CYP)
Assistant Referee 2: Elisabeth Thoresen (NOR)
Fourth Official: Emilie Dokset (NOR)
Twente – FC Nike
Referee: Cansu Tryak (TUR)
Assistant Referee 1: Betuel Yilmaz (TUR)
Assistant Referee 2: Veronica Martinelli (ITA)
Fourth Official: Maria Ferrieri Caputi (ITA)
Girondins Bordeaux – Slovacko
Referee: Viki de Cremer (BEL)
Assistant Referee 1: Joline Delacrois (BEL)
Assistant Referee 2: Vjolca Izeiri (MKD)
Fourth Official: Irena Velevackoska (MKD)
Osijek – Breznica
Referee: Miriama Matulova (SVK)
Assistant Referee 1: Ivana Leskova (SVK)
Assistant Referee 2: Paulina Baranowska (POL)
Fourth Official: Michalina Diakow (POL)
St. Poelten – Besiktas
Referee: Jelena Medjedovic (SRB)
Assistant Referee 1: Aleksandra Milojevic (SRB)
Assistant Referee 2: Sidsel Rasmussen (DEN)
Fourth Official: Frederikke Sokjaer (DEN)
CSKA – Swansea City
Referee: Tanja Racic (BIH)
Assistant Referee 1: Aida Jusufovic (BIH)
Assistant Referee 2: Aleksandra Stojanac (SRB)
Fourth Official: Marina Zivkovic (SRB)