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:

• Aamer, Ammar
• Abdallah, Ayman
• Abdelilah, Bouchra
• Adaku, Ebenezer
• Afshari, Hamid
• Afum, Ebenezer
• Agarwal, Ashish
• Agyabeng-Mensah, Yaw
• Aheleroff, Shohin
• Ahlskog, Mats
• Ali, Zulqurnain
• Alves, Anabela
• Andersen, Ann-Louise
• Angelis, Jannis
• Arellano Caro, Maricela
• Asadi, Narges
• Assarlind, Marcus
• Avella, Lucía
• Aydemir, Erdal
• Aydin, Erhan
• Ayeni, Peter
• Baah, Charles
• Badar, M. Affan
• Badurdeen, Fazleena
• Bahadori, Ramin
• Barata, João
• Barbin Laurindo, Fernando Jose
• Bateman, Nicola
• Baxter, Lynne
• Belhadi, Amine
• Beltagui, Ahmad
• Bengtsson, Marcus
• Bernardel, Flora
• Bhasin, Sanjay
• Bhutta, Mohammad
• Binti Abu Seman, Noor Aslinda
• Blomqvist, Marja
• Boer, Harry
• Bokrantz, Jon
• Borazon, Elaine
• Botha, Anthon
• Bravi, Laura
• Bressanelli, Gianmarco
• Bruch, Jessica
• Buer, Sven-Vegard
• Cagliano, Raffaella
• Capraz, Ozan
• Carvalho, Marly
• Čater, Tomaž
• Centobelli, Piera
• Chandrashekar, Deepak
• Chaudhuri, Atanu
• Chauhan, Chetna
• Chavez, Roberto
• Cheng, Yang
• Chiarini, Andrea
• Chin, Jeng Feng
• Chirumalla, Koteshwar
• Chockalingam, Annamalai
• Cimini, Chiara
• Correa, Henrique
• Cristofaro, Matteo
• Cross, Jennifer
• Culot, Giovanna
• Cunha, Paulo
• Das, Chiranjit
• De Alcantara, Douglas Pedro
• De Paula, Istefani
• Dekkers, Rob
• Demeter, Krisztina
• Dey, Prasanta
• Djassemi, Manocher
• Engelseth, Per
• Esposito, Giovanni
• Fernando, Yudi
• Ferrarese, Andre
• Ferreira, Joao
• Fettermann, Diego
• Fleury, Afonso
• Found, Pauline
• Francalanza, Emmanuel
• Frank, Alejandro G.
• Frederico, Guilherme
• Fredriksson, Anna
• Garbie, Ibrahim
• Garza-Reyes, Jose Arturo
• Gelei, Andrea
• Ghobakhloo, Morteza
• Gualtieri, Luca
• Guimaraes, Tor
• Gurumurthy, Anand
• Hanson, Robin
• Hartman, Nathan
• Heikkilä, Jussi
• Hilton, Roger
• Ho, Ying-Chin
• Holzmann, Patrick
• Hu, Qing
• Huang, Fang
• Ikuma, Laura
• Inman, R. Anthony
• Islam, Shahidul
• Jagstedt, Siri
• Jin, Yuran
• Johansson, Peter
• Joyce, Joseph
• Julião, Jorge
• Kafetzopoulos, Dimitrios
• Kalchschmidt, Matteo Giacomo Maria
• Kandasmay, Jayakrishna
• Khanzode, Akshay
• Khorram Niaki, Mojtaba
• Kiridena, Senevi
• Klingenberg, Cristina
• Knofius, Nils
• Kohtamäki, Marko
• Kumar, Praveen
• Kurdve, Martin
• Leoni, Luna
• Leseure, Michel
• Liao, Ying
• Lim, Ming
• Lin, Youn-Jan
• Lindhult, Erik
• Linnéusson, Gary
• Losonci, Dávid
• Luomaranta, Toni
• Machado, Carla
• Madsen, Erik Skov
• Mahapatra, Siba
• Maletič, Damjan
• Marche, Brunelle
• Marcon, Érico
• Margherita, Alessandro
• Marsillac, Erika
• Martins, Roberto
• Masood, Tariq
• Matt, Dominik
• Minshall, Tim
• Mittal, M. L.
• Mo, John P. T.
• Mogos, Maria Flavia
• Molina, Arturo
• Moore, Megan
• Motamarri, Saradhi
• Motyl, Barbara
• Mourtzis, Dimitris
• Mueller, Julian
• Müller, Julian Marius
• Murmura, Federica
• Nag, Barin
• Nagalingam, Sev
• Neroni, Mattia
• Noor Kamar, Ahmad Nazif
• Nyffenegger, Felix
• Oke, Adegoke
• Olhager, Jan
• Oliva, Fábio
• Onuh, Spencer
• Otto, Boris
• Pakdeechoho, Nutcharee
• Pätäri, Satu
• Patrucco, Andrea Stefano
• Pawar, Kulwant
• Peillon, Sophie
• Pepper, Matthew
• Pereira, Veridiana
• Pessot, Elena
• Petroutsatou, Kleopatra
• Piller, Frank
• Pinheiro De Lima, Edson
• Pirola, Fabiana
• Podrecca, Matteo
• Powell, Daryl
• Pretorius, Leon
• Punter, Matthijs
• Radhakrishnan, Abirami
• Rahman, Mushfiqur
• Ramayah, Thurasamy
• Rauch, Erwin
• Razavi Hajiagha, Seyed Hossein
• Ribau, Cláudia Pires
• Rodriguez-Rivero, Rocio
• Romagnoli, Giovanni
• Rylands, Brogan
• Säfsten, Kristina
• Sagnak, Muhittin
• Sala, Roberto
• Samadhiya, Ashutosh
• Samaranayake, Premaratne
• Sannö, Anna
• Santos, Gilberto
• Santos, Reginaldo
• Scherrer, Maike
• Schmidt, Marie-Christin
• Schott, Peter
• Seth, Dinesh
• Shah, Bhavin
• Shahin, Arash
• Sharma, Pankaj
• Singh Patel, Bharat
• Sobota, Vladimir
• Soda, Sheetal
• Sofianopoulou, Stella
• Sohal, Amrik
• Soosay, Claudine
• Sousa, Rui
• Steenhuis, Harm-Jan
• Stentoft, Jan
• Sunder M., Vijaya
• Surie, Gita
• Szász, Levente
• Szwejczewski, Marek
• Taj, Shahram
• Tan, Boon
• Tiburzi, Luigi
• Tlapa, Diego
• Tortorella, Guilherme
• Tripathy, Sushanta
• Tsinopoulos, Christos
• Ucler, Caglar
• Veile, Johannes
• Venugopal, Venkataraman
• Vereycken, Yennef
• Waehrens, Brian V.
• Wæhrens, Brian Vejrum
• Walsh, Philip
• Wan, Hung-Da
• Wang, Chao-Hung
• Wang, Juite
• Wickramasinghe, Gld
• Wilson, Shellyanne
• Xu, Li Da
• Yadav, Gunjan
• Yadav, Vinod
• Yaftiyan, Fatemeh
• Yamamoto, Yuji
• Yazdani-Chamzini, Abdolreza
• Yokozawa, Kodo
• Yoo, Taejong
• Zahraee, Seyed Mojib
• Zailani, Suhaiza
• Zammori, Francesco
• Zhang, Linda
• Zhang, Shuaishuai
• Zhang, Yufeng
• Zheng, Ting