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: 
   
Abhari, Sara
Abou- Warda, Sherein
Adawiyah, Wiwiek Rabiatul
Afriyie, Samuel
Agarwal, Sucheta
Aghaei, Iman
Agnihotri, Durgesh
Ahsan, Mujtaba
Al-Samydai, Ali
Alam, Muhammad Zubair
Alawamleh, Mohammad
Ali, Jabir
Alqahtani, Nasser
Amjad, Tayyab
Amoncar, Nihar
Amrita
Ardley, Barry
Arora, Sapna
Asaleye, Abiola
Athiyaman, Adee
Barreto, Tais
Bobelyn, Annelies
Brajaballav,  Kar 
Budiati, Yuli
Chandra, Pramod
Charoensukmongkol, Peerayuth
Crick, James
D'andrea, Fernando Antonio
Dalecki, Linden
Dias, Claudia
Dowin Kennedy, Elena
Eggers, Fabian
Ensign, Prescott C.
Farrukh, Muhammad
Ferdinand, Augusty
Ferreira, Caitlin
Fillis, Ian
Fraser, Peter
Friske, Wesley
Gala, Prachi
Games, Donard
Gbadamosi, Ayantunji
Goyal, Anita
Guha, Sanjay
Guo, Chiquan
Hassibi, Saman
Heitman-Lucy, Carol
Hendijani Fard, Morteza
Ishaq, Muhammad Ishtiaq
Joensuu-Salo, Sanna
Johara, Fatema
Jones, Rosalind
Krumova, Milena
Kumar, Sharad
Le Nguyen, Binh Minh
Leek, Sheena
Lewis, Gemma
Lichtenthaler, Ulrich
Limongi, Ricardo
Lopes, João M.
Lortie, Jason
M, Dileep
Ma, Dalong
Magrizos, Solon
Mahmoud, Abdulai Mahmoud
Manishimwe, Theoneste
Mcauley, Andrew
Morrish, Sussie
Mu, Jifeng
Neill, Stern
Nicol, Cameron
Nouri, Pouria
O'Dwyer, Michele
O'reilly, Kelley
Oddy, Richard
Pascal, Vince
Patra, Bhairab Chandra
Pattinson, Hugh
Piaralal, Shishi
Polonsky, Michael
Rafiki, Ahmad
Raza, Ali
Reid, Andrea
Renton, Michelle
Roach, David
Robledo, Sebastian
Roedenbeck, Marc
Rossi, Matteo
Sahin, Begum
Schaller, Tracey
Sort, Jesper C.
Spais, Georgios
Vasquez, John
Verma, Ritesh
Vuorio, Anna
Weiner, Julia
Worthington, Shari
Yap, Crystal