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
• Ab Wahid, Roslina
• Abdel Fattah, Fadi
• Abusalim, Taghreed
• Acciarini, Chiara
• Adetunji, Olufemi
• Afaq, Anam
• Agarwal, Ashish
• Agrawal, Rohit
• Ahmad Ansari, Mohammad Sultan
• Ahmad, Waqas
• Ahmed, Selim
• Akbarzadeh Khorshidi, Hadi
• Al-Awlaqi, Mohammed
• Al-Dhaafri, Hassan
• Alhamee, Layla
• Alias, Aidi
• Alsheyadi, Anwar
• Ambekar, Suhas
• Ameer, Irfan
• Amin, Muslim
• Amiri Aghdaie, Seyed Fathollah
• Anholon, Rosley
• Antunes, Marina
• Apornak, Arash
• Arianpoor, Arash
• Arnheiter, Edward
• Babatunde, Oluwayomi
• Baccarani, Claudio
• Badar, M. Affan
• Bag, Surajit
• Baidoun, Samir
• Baig, Sajjad
• Balasubramanian, Sreejith
• Baratta, Rossella
• Barua, Bikash
• Bassi, Francesca
• Behl, Abhishek
• Behnood, Ali
• Belayutham, Sheila
• Bellio, Elena
• Ben Salem, Anis
• Bhat, Shreeranga
• Bigi, Alessandro
• Bonfanti, Angelo
• Boorla, Srinivasa Murthy
• Bouranta, Nancy
• Bravi, Laura
• Brinia, Vasiliki
• Brunetti, Federico
• Buccoliero, Luca
• Bugdol, Marek
• Canestrino, Rossella
• Cano-Kourouklis, Michele
• Carnerud, Daniel
• Carrubbo, Luca
• Cassia, Fabio
• Castellani, Paola
• Cavacece, Ylenia
• Cavallone, Mauro
• Chahal, Hardeep
• Chang, Yung-Chia
• Chatterjee, Namrata
• Chatzipetrou, Evrikleia
• Chau, K. W.
• Chauhan, Nr
• Che Ibrahim, Che Khairil Izam
• Cheng, Lang
• Chiarini, Andrea
• Chou, Sheng-Fang
• Chountalas, Panos
• Chowdhury, Barnali
• Chowdhury, Mohammad
• Ciasullo, Maria
• Cobelli, Nicola
• Conti, Emanuela
• Cosimato, Silvia
• Costa, Nuno
• Cucino, Valentina
• Dar, Dhruv
• Datta, Amit
• De Vries, Henk
• Desai, Tushar
• Dhamija, Pavitra
• Douglas, Jacqueline
• Dubey, Rameshwar
• Dutt, Christopher
• Dutta, Kirti
• Elamer, Ahmed
• Elg, Mattias
• Eriksson, Maria
• Ershadi, Mohammad Javad
• Fargnoli, Mario
• Fazlollahtabar, Hamed
• Fedele, Maria
• Fernandes, Marcelo
• Foroudi, Pantea
• Fraser, Kym
• Gaikwad, Lokpriya
• Ganesh, Jai
• Ganji, Kashmira
• Gaudenzi, Barbara
• Gaur, Loveleen
• Georgiev, Svetoslav
• Ghouse, Suhail M.
• Giampaola, Valerio
• Gijo, E. V.
• Glaveli, Niki
• Gomes, Carlos F.
• Gonzalez Cruz, Tomas
• Gonzalez, Marvin
• Gremyr, Ida
• Grigg, Nigel
• Gunawan, Indra
• Gupta, M. L. Gupta
• Gupta, Sandeep
• Gupta, Shivam
• Gustavsson, Susanne
• Gutierrez Leefmans, Maria Manuela
• Haj Aghapour, Ali
• Halevy, Avner
• Hamilton, John
• Hashemisima, Habibe
• Hassan, Yusuf
• He, Zhen
• Heavey, Colm
• Heine, Ina
• Hsu, Li-Ping
• Hudnurkar, Manoj
• Iandolo, Francesca
• Ikram, Muhammad
• Inoue, Hirotaka
• Iqbal, Zafar
• Irianto, Dradjad
• Isaksson, Raine
• Jain, Aman
• Janatyan, Nassibeh
• Jayamaha, Nihal
• Jayawardena, Nirma
• Jochem, Roland
• Joghee, Ravichandran
• Joshi, Sudhanshu
• Jum'a, Luay
• Jyoti, Jeevan
• Kalia, Prateek
• Kang, Chang Wook
• Kapoor, Rohit
• Karakasnaki, Maria
• Karaszewski, Robert
• Karaszewski, Robert
• Kaur, Harjit
• Kaur, Harpreet
• Kaya, Ihsan
• Keramida, Efthalia
• Khan, Arif
• Khan, Syed Abdul Rehman
• Kortian, Vik
• Kulenovic, Mirza
• Kumar Sharma, Nagendra
• Kumar Singh, Rohit
• Kumar, Akshay
• Kumar, Anil
• Kumar, Amit
• Kumar, Sushant
• Kumar, Vimal
• La Sala, Antonio
• Lagrosen, Yvonne
• Laureani, Alessandro
• Lee, Voon-Hsien
• Lopez Astudillo, Andres
• Lovett, Steve
• Lyu, Hongbo
• Magno, Francesca
• Malandrino, Ornella
• Mamula, Tatjana
• Martínez-Lorente, Angel
• Mcadam, Rodney
• Mcdermott, Olivia
• Medeiros, Denise
• Megaro, Antonietta
• Mihiotis, Athanassios
• Milovanović, Mirjana
• Mohammad Shafiee, Majid
• Moretta Tartaglione, Andrea
• Moturi, Christopher
• Moura E. Sá, Patrícia
• Mullai, Arben
• Muneer, Gulnaz
• Munshi, Anupama
• Murtaza, Qasim
• Musso, Fabio
• Nagar, Komal
• Nagarajan, Ramesh
• Narbariya, Sonali
• Nigam, Achint
• Odongo, Nickson
• Ooi, Keng-Boon
• Oprime, Pedro
• Oteng, Daniel
• Owusu, Isaac
• Pacheco, Diego
• Padró, Fernando
• Palazzo, Maria
• Palumbo, Rocco
• Panghal, Anupama
• Papadimitriou, Antigoni
• Pellegrino, Roberta
• Pencarelli, Tonino
• Peter Nadeem, Simon
• Pinna, Roberta
• Polizzi, Salvatore
• Pourrajab, Masoumeh
• Pranay, More
• Psomas, Evangelos
• Qazi, Abroon
• Rahman, Abdul
• Rahman, Muhammad Sabbir
• Rajashekharaiah, Jagadeesh
• Rameez, Raja
• Razzaq, Asif
• Refflinghaus, Robert
• Ridelberg, Mikaela
• Riley, Jason
• Rogala, Piotr
• Rossato, Chiara
• Ruggieri, Alessandro
• Sahney, Sangeeta
• Sarkar, Ashok
• Sedevich-Fons, Leonardo
• Shah, Tazeem
• Shahin, Arash
• Shahin, Aryana
• Shamim, Saqib
• Sharma, Jyoti
• Sharma, Shavneet
• Shelley, Mack
• Shrivastava, R.
• Shukla, Keerti
• Sibalija, Tatjana
• Sichinsambwe, Chanda
• Silvestri, Cecilia
• Singh, Gurmeet
• Singh, Kanwarpreet
• Singh, Kunwar
• Singh, Navjit
• Singh, Sukhraj
• Slack, Neale
• Sony, Michael
• Sousa, Sérgio
• Sreedharan, V. Raja
• Stepanovich, Paul
• Suarez-Barraza, Manuel F.
• Sunder M., Vijaya
• Sutoova, Andrea
• Taner, Mehmet Tolga
• Tanveer, Muhammad
• Tarí, Juan José
• Tay, Kai Meng
• Thareja, Priyavrat
• Torre, Carlo
• Troisi, Orlando
• Tuzovic, Sven
• Uzir, Md. Uzir Hossain
• Valio Dominguez Gonzalez, Rodrigo
• Vigolo, Vania
• Viles, Elisabeth
• Vinodh, S.
• Vlachos, Ilias
• Vorria, Evanthia
• Vouzas, Fotios
• Watson, Gregory
• Wilkinson, Georgina
• Willar, Debby
• Wu, Hsin-Hung
• Yadav, Devendra
• Yakuban, Imthiyas
• Yapa, Saman
• Zhang, Justin Zuopeng
• Zhani, Najlae
• Zimon, Dominik
• Zwain, Ammar