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:
| Abdelfattah, Fadi |
| Adedokun, Titilayo |
| Adeleke, Akinniyi |
| Adetomiwa, Basiru |
| Adewale, Nafisat |
| Adkins, Denice |
| Ahmed, S.M. Zabed |
| Aiyebelehin, Afebuameh |
| Akintunde, Stephen |
| Al Hijji, Khalfan |
| Al-Aufi, Ali |
| AL-Nuaimi, Maryam |
| Alajmi, Bibi M. |
| Alghamdi, Abdullah |
| Ali, Muhammad Yousuf |
| Alipour Hafezi, Mehdi |
| Alshahrani, Dr Hussain |
| Alwreikat, Asma |
| Amoako, George |
| Ansari, Nasim |
| Ashworth, Susan |
| Aslam, Mohammad |
| Asmi, Nowsheeba Ashraf |
| Assefa, Shimelis |
| Aziz, Dr. Muhammad Faisal |
| Azougool, Basil |
| Bales, S |
| Bangani, Siviwe |
| Baro, Ebikabowei |
| Barr, Linda |
| BasirianJahromi, Reza |
| Beauregard, Caitlin |
| Beliga, Slobodan |
| Beolens, Rhiannon |
| Bhatt, Priyanka |
| Bid, Subhodip |
| Birdi, Briony |
| Blackman, Anna |
| Boamah, Eric |
| Boateng, Henry |
| Cain, Brian |
| Campbell-Meier, Jennifer |
| Chauhan, Suresh |
| Cherukodan, Dr. Surendran |
| Chigwada, Josiline |
| Chong, Chin Wei |
| Cossham, Amanda |
| Courtney, Michael |
| Dahleez, Khalid |
| De Grandbois, Yvonne |
| De, Sanghita |
| Dong Hyun, Song |
| Doulani , Abbas |
| Durant, Fletcher |
| Ersoy, Metin |
| Evans, David |
| Faix, Allison |
| Fontane, Walt |
| Ganjihal, Gireesh |
| Ganjihal, Gireesh |
| Gaston, Nicole |
| Giannakopoulos, Georgios A. |
| Gómez-Hernandez, Jose-Antonio |
| Goulding, Anne |
| Granklint Enochson, Pernilla |
| Grigas, Vincas |
| Haddow, Gaby |
| Hamad, Faten |
| Hamilton, Jennifer |
| Hannay, Karen |
| Hindagolla, Menaka |
| Hopkins, Sandra |
| Hussain, Abid |
| Idiedo, Victor |
| Ihejirika, Kingsley |
| Inthiran, Anushia |
| Irvine, Jan |
| Isfandyari-Moghaddam, Alireza |
| Islam, Md.Anwarul |
| Jafari Navimipour, Nima |
| Jain, Priti |
| Jamali, Hamid R. |
| Javeed, Anam |
| Jucquois-Delpierre, Monique |
| Kahiga, Naomi |
| Kankam, Philip Kwaku |
| Karott, Susan |
| Katabalwa, Anajoyce Samuel |
| Khan, Amjid |
| Khan, Asad |
| Khan, Muhammad Yar |
| Khan, Nadim |
| Knapp, Jeffrey |
| Kosciejew, Marc |
| Kumar, Raj |
| Licea de Arenas, Judith |
| Lowe, Megan |
| Luca, Edward |
| Lund, Brady D. |
| Mahapatra, Namita |
| Mahapatra, Rabindra Kumar |
| Mahmood, Khalid |
| Malik, Basharat |
| Mallya, Rehema |
| Manley, James |
| Mansour, Essam |
| Mansourian, Yazdan |
| Mapulanga, Patrick |
| Marutha, Ngoako |
| Mattock, Lindsay |
| Mavodza, Judith |
| McEnery, Lillian |
| Merry, Sarah Kate |
| Mohebi, Azadeh |
| Mosweu, Olefhile |
| Motahari-Nezhad, Hossein |
| Mukherjee, Bhaskar |
| Mwalukasa, Nicholaus |
| Naderbeigi, Farahnaz |
| Nagarkar, Shubhada |
| Nakhoda, Maryam |
| Netshakhuma, Nkholedzeni |
| Ngo Kobhio Balôck, Louise Luteine |
| Ngoepe, Mpho |
| Ngulube, Patrick |
| Niu, Jinfang |
| Obeidat, Othman |
| Okour, Mohammad |
| Olaka, Musa |
| Oliphant, Tami |
| Oliveira, Silas |
| Onyancha, Omwoyo Bosire |
| Osedo, Onyinye |
| Pal, Jiban K. |
| Paletta, Francisco |
| Prieto, Adolfo |
| Pryse, JA |
| Rafferty, Pauline |
| Rafi, Muhammad |
| Rahman, Muhammad |
| Richardson, Joanna |
| S, Nagaraju |
| Sahoo, Jyotshna |
| Salau, Sadiat |
| Schmerbauch, Maik |
| Schöpfel, Joachim |
| Shafi, S |
| Sharma, Sanjeev |
| Shehatta, Ibrahim |
| Shuva, Nafiz |
| Siddique, Nadeem |
| Singh, Diljit |
| Sjöberg, Jeanette |
| Smedley, Jo |
| Snyman, Maritha |
| Still, Julie |
| Supermane, Sugunah |
| Swain, Dr. Dillip K |
| Tagtmeyer, Peter |
| Tanner, Kerry |
| Thornton, Stephen |
| Tripathi, Manorama |
| Tseng, Hungwei |
| Udem, Kingsley |
| Valmohammadi, Changiz |
| Virkus, Sirje |
| Vos, Marta |
| Wahid, Nazia |
| Walton, Geoff |
| Welland, Sarah |
| Winter, Marsha |
| Wright, Steve |
| Yeates, Stuart |
| Yerbury, Hilary |
| Zia, Sana |
| Zimmerman Nilsson, Marie-Helene |
| Zulkarnain, Nur |