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: 

• Abbasi, Tayyebeh
• Abell, Daniel
• Abi Aad, Amine
• Abu Bakar, Hassan
• Adobor, Henry
• Afshari, Leila
• Aftab, Junaid
• Ahmad, Saima
• Ahmed, Muhammad
• Ahmed, Syed
• Albacete-Sáez, Carlos Antonio
• Ali, Muhammad
• Alok, Kumar
• Alwali, Joather
• An, Fansuo
• Anholon, Rosley
• Anthony, Mary
• Anzengruber, Johanna
• Appienti, William
• Arici, Hasan Evrim
• Arthur, Reginald
• Arun, Korhan
• Aryee, Bernard
• Asad, Muhammad
• Asiamah, Michael
• Atif, Mian Muhammad
• Atouba, Yannick
• Auer-Rizzi, Werner
• Awang, Siti Rahmah
• Bahamonde, Danae
• Balda, Janis
• Bani-Melhem, Shaker
• Barnett, Carole
• Barua, Banya
• Bashir, Sajid
• Batool, Fatima
• Bayram, Ayhan
• Berry, Anthony
• Bodla, Ali
• Bourini, Islam
• Brinsfield, Chad
• Brown, Travor
• Busari, Abdul Halim
• Cakmakoglu Arici, Nagihan
• Caringal-Go, Jaimee Felice
• Castillo-López, Ana
• Caulfield, Jay
• Cernas-Ortiz, Daniel
• Cheng, Junjun
• Chon, Myoung-Gi
• Chua, Sarah
• Chughtai, Aamir
• Church, Allan
• Cook, Caryn
• Coyle, Patrick
• Crayne, Matthew
• Das, Roshni
• Densten, Iain
• Dhar, Udayan
• Domínguez Escrig, Emilio
• Donald, William
• Duarte, Stephen
• Edwards, Gareth
• Emirza, Sevgi
• Ennis, Michele
• Fahmy, Rahmi
• Fan, Qing
• Fatima, Tehreem
• Fayzullaev, Abdulkhamid
• Fernando, Mario
• Franco, Edna
• Frank, Brian
• Galbraith, Brendan
• Ghosh, Koustab
• Graso, Maja
• Grint, Keith
• Grover, Steven
• Guo, Limin
• Halliwell, Peter
• Hans, Swati
• Hechanova, Ma. Regina
• Helland, Katherine
• Herjanto, Halimin
• Hevi, Stewart
• Higgs, Malcolm
• Hong, Paul
• Houghton, Jeffery
• Islam, Tahir
• Islam, Talat
• Jacobs, Maarten
• Joseph, George
• Katsaros, Kleanthis
• Kerr, Robert
• Ketemepi, Gifty
• Khan, Essa
• Khan, Malik
• Khan, Muhammad
• Khan, Sajjad Nawaz
• Kingston, George
• Kirrane, Melrona
• Kivipold, Kurmet
• Knotts, Kevin
• Kuntz, Joana
• Lagace-Roy, Daniel
• Laiho, Maarit
• Lanier, Patricia
• Lee, Felissa
• Lee, Junesoo
• Lee, Yeunjae
• Levesque-Côté, Julie
• Liang, Xin
• Liborius, Patrick
• Liu, Longjun
• Liu, Ning
• Liu, Yan
• Llorens Montes, Francisco
• Lo, Man Fung
• Lodhi, Rab Nawaz
• Loughlin, Catherine
• Luan, Yuxiang
• Lundqvist, Daniel
• Lyons, Brian
• Macintyre, Allister
• Manaois, Jason
• Manegold, Jennifer
• Mani, Swaminathan
• Maran, Thomas
• Marquardt, Dennis
• Martins, Flavio
• Matošková, Jana
• Mattson Molnar, Malin
• Mawutor, John Kwaku
• Mccracken, Martin
• Mcelveen, Christopher
• Medeiros, Vicente
• Mehmood, Muhammad
• Men, Chenghao
• Mendez, Maria J.
• Mharapara, Tago
• Mohammad, Jihad
• Mohandas, Nimmi
• Mubarak, Namra
• Mubarik, Muhammad Shujaat
• Muchiri, Michael
• Muldoon, Jeffrey
• Murray, Duncan
• Naidoo, Loren
• Naqshbandi, M Muzamil
• Nauman, Shazia
• Naveed, Muhammad
• Nichols, Austin Lee
• Offord, Matt
• Ofumbi, David
• Oh, Jinuk
• Ott, Dana
• Palalar Alkan, Deniz
• Pan, Zhenlin
• Pangarso, Astadi
• Park, Sohee
• Patel, Parth
• Pearse, Noel
• Poell, Rob
• Psychogios, Alexandros
• Purcell, Wendy
• Qiao, Risheng
• Rajbhandari, Mani   Man Singh
• Rajesh, J
• Read, Dustin
• Rice, John
• Rode, Joseph
• Ruben, Brent
• Sabar, Sabar
• Saeed, Mohtsham
• Sahu, Sangeeta
• Sattayaraksa, Tharnpas
• Sharma, Anshu
• Sheridan, Lynnaire
• Smulowitz, Stacy
• Smyth, Ian
• Son, Sujin
• Sönmez, Betül
• Stréhli, Georgina
• Susanto, Ely
• Svensson, Sven
• Tang, Nan
• Tseng, Lu-Ming
• Turner, Nick
• Ullah, Irfan
• Valle, Matthew
• Vanhove, Adam
• Wallo, Andreas
• Walthall, Margaret
• Wang, Cong
• Weber, Sheri
• Whiteoak, John
• Widianto, Sunu
• Wobete, Alebachew
• Xie, Lei
• Yan, Bao
• Yang, Conna
• Yang, Jie
• Yemiscigil, Ayse
• Yildirim Özmutlu, Saniye
• Zhang, Chunyu
• Zhang, Shanliang
• Zhang, Weiwei
• Zhou, Jiang
• Zia, Muhammad Qamar
• Žnidaršič, Jana