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:

• A, Chinnasamy
• A, Dinesh
• A, Pasumponpandian
• A, Vivekanandam
• Abd El-Latif, Ahmed
• Abidi,  Mustufa Haider 
• Adediran, Adeolu Adesoji
• Ahamad , Danish 
• Ahmed, Nigar
• Alameen, Abdalla 
• Ammal S, Meenakshi
• Ananthakrishnan, Balasundaram
• Andrews, Leo John Baptist
• Angappan, Senthil Kumar
• Arumugam, Sundaram
• Au, Thi Kim Loan
• B, Anil Kumar
• B, Dr Pakkiariah
• Bashar, Abul 
• Bird, Benjamin
• Bouakkaz, Mustapha
• Chaitanya, Gogineni Krishna
• Chalasani, Suneetha Ch
• Chin, Rey 
• D, Madhu Babu
• D, Saravanan
• Deva, James
• Diehl, Grace 
• Duong, Van Tu
• Ezra, Morris Abraham G 
• G, Karthik
• G, Ramesh
• G, Sambasivam
• Goyal, S.B.
• Gupta, Ashu 
• Hasan, Mohammad Kamrul
• Hochan, Kim
• Hong, Sun Ki
• Immaculate Marry, Sheela 
• J, Vijitha
• Jayaraman, Vaishnavi
• Jeganathan, Selvaprabu
• Jeon, Chang-Wan
• K, Rama Krishna.K
• K.Selvaraj, K
• Kaliappan, Vishnu
• Karthik, Dr.K.Priyadarsini
• Kayikci,  Safak 
• Krishna, Vamsee
• Kumar, Aakash 
• Kumar, Saroj 
• Le, Thanh-Long
• Le, Tuan Phuong Nam
• M.A., Berlin 
• Manoharan, Samuel
• Manoharan, Samuel J
• Maqsood, Adnan
• Mazhar, Naveed 
• Md , Mobin Akhtar 
• Mishra, Monalisa 
• Moorthy, Krishna
• Motonaka, Kimiko
• Muhammad Lawan, Salisu
• Mukherjee, Amrit
• Nagata, Fusaomi
• Ngo, Tri
• Nguyen, Hien
• Nguyen, Khanh
• Nguyen, Nhu Van
• Nguyen, Tan Tien
• Nguyen, Tran-Phu
• Obaid, Ahmed J.
• Otsuka, Akimasa
• Özsungur, Fahri 
• Padmakumar, Jeeva
• Page, John
• Panigrahi, Susant Kumar
• Papic, Vladan
• Perumal, Boominathan
• Pignaton De Freitas, Edison 
• Prasad, K Sajun 
• Putta, Venkata Subbaiah
• R, Arthi
• R, Dhaya
• R, Nandha Kumar
• Raj, Krishna 
• Rajagopal, Maheswar
• Rajasekaran, S.
• Rao, A.Rama 
• Rathi, Geetganjali
• S, Destwadu
• S, Hariharasitaraman
• S, Sridevi
• S, Subarna 
• Safar, Muhammad Juhairi Aziz
• Saradhi, Saradhi Vijay
• Sasikala, Sasikala
• Sharma, Ajaya
• Singh, Akansha
• Singh, Amandeep
• Srigrarom, Sutthiphong 
• Srinivasa Rao, Yenni
• Subramanian, Chelakara
• T, Senthil Kumar
• Thirukkumaran, R
• Tran, Duc-Tan
• Tran, Minh
• Tran, Thanh-Tinh
• Tran, Viet-Thang
• V, Bindhu
• V, Sridhar Reddy V
• Veres, Sandor
• Vignesh, Arun
• Wagh, Kavita
• Yadav, Dileep
• Yasuda, Toshiyuki
• Zhong, Yanfei