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: 

Abd Aziz, Norzalita
Abdullah, Nur
Aboramadan, Mohammed
Adam, Sabrinah
Adams, David
Adams, David
Agostino, Deborah
Agrawal, Nishant
Ahire, Mangesh
Ahmed, Waqar
Akhtar, Mohammad
Al-Dhaafri, Hassan
Algorta, Marcos
Almaktoom, Abdulaziz
Alvarez-Torres, Francisco
Ambastha, Ajitabh
Ammirato, Salvatore
Anantadjaya, Samuel
Andriani, Made
Arellano-Rodríguez, Juan
Armstrong, Ryan
Auzair, Sofiah Md
Aydin, Ipek
B, Nataraj
Belalia, Zainab
Bhawsar, Pragya
Bonilla Pardo, Julio Cesar
Bonnet , Jean 
Cannavacciuo , Lorella 
Cardoni, Andrea
Carlucci, Daniela 
Chang, Kuo-Chien
Chatterjee, Debmallya
Chen, Jen-Wei
Cheng, Jung Lang
Chourides, Pieris
Cooper, William
Dambiski Gomes De Carvalho, Gustavo
Damodaran, Akhil
Eklof, Jan
Felicetti, Alberto Michele
García-Sánchez, Isabel-María 
Garvare, Rickard
Ghatasheh, Nazeeh
Haerizadeh, Milad
Hsu, Chia-Yu
Jahrami, Haitham
Jayamaha, Nihal
K T, Ramesh
Kantabutra, Sooksan
Kaur, Parneet
Kothandaraman, Kk
Kumar, Rupesh
Lerro, Antonio
Linzalone, Roberto
Lo, Ying Chen
Lopez-Torres, Gabriela Citlalli
Macias De Anda, Enrique
Maggon, Mohita
Maginnis, Michael
Mamula, Tatjana
Martín-Cervantes, Pedro A. 
Martínez-Córdoba, Pedro-José
Matonti, Gaetano 
Matricano, Diego
Messeni Petruzzelli, Antonio
Minutiello, Valentina
Moustaghfir, Karim
Olanrewaju, Abdullateef
Peng, Chi Lu
Philbin, Simon
R, Balamurugan
Rahman, Muhammad 
Rane, Santosh 
Ricciardelli, Alessandra
Romanelli, Mauro
Rompho, Nopadol
Rounaghi, Mohammad Mahdi
Sampa, Chilufya 
Santarsiero, Francesco
Shahin, Arash
Shen, Kao-Yi
Shkoda, Tetiana
Singh, T
Sládková, Jitka
Sposato, Martin
Tomás Lopes, Ilidio
Tsai, Pei-Fang
Urban, Wieslaw
Wankhade, Lalit
Yan, Min-Ren