The publishing and editorial teams would like to thank the following, for their invaluable service as 2021 reviewers for this journal. We are very grateful for the contributions made. With their help, the journal has been able to publish such high-quality articles: 

Aggarwal, Vivek
Arrigoni , Adalberto
Arslan, Muhammad
Baba, Bello
Berniak-Woźny, Justyna
Brinkman, Marina
Cahaya, Fitra Roman
Caputo, Fabio
Carlbäck, Mats
Datta, Ranjan
Diers-Lawson, Audra
Dufour, Yvon
Eddial, Hajar
Esau, Graeme
Etrata, Antonio Jr
Faisal, Faisal
Fareed, Zeeshan
Gupta, Uma
Hassi, Abderrahman
Howarth, Richard
Hufton, David
Ikram, Muhammad
Islam, Talat
Ismail, Zul-Atfi
Kaewchird, Siriwan
Kengatharan, Navaneethakrishnan
Kennett, Geraldine
Kleymann, Birgit
Kostopoulos , Ioannis
Kraus, Patrick
Kwarteng, Amoako
Latif, Khawaja Fawad
Legrand, Willy
Magrizos, Solon
Mensah, Henry
Minderman, Mirjam
Moalla, Marwa
Mohammad, Jihad
Nubuor, Saviour Ayertey
Nyeadi, Joseph
Obeng, Victoria
Pagadala, Ammani
Paskova, Martina
Pucciarelli, Francesca
Quoquab, Farzana
Ramboarisata, Lovasoa
Riaz, Zahid
Richards, Cameron
Rusinko, Cathy
Saci, Fateh
Seidel, Jan
Shah, Bhavin
Shubita, Moade
Singh, Reeta
Smith, Jonathan Ashley
Snelson-Powell, Annie
Storey, Meredith
Stough, Talia
Tan, Kim Lim 
Topic, Martina
Ur Rehman, Shafique
Van Rheede, Arjan
Velte, Patrick
Wu, Junjie
Yee, Jeffrey
Younas, Zahid
Zaid, Mohammad