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:
| Ab rahman, Asmak |
| Abbas, Dr. Azhar |
| Abd Razak, Abdurrizqi |
| Abd Samad, Khairunnisa |
| Abdillah, Muhammad Rasyid |
| Abdul Rahman, Rahayu |
| Abdulaziz-Alhumaidan, Abdullah |
| Abdullah, Md. Faruk |
| Abdullah, Mohammad |
| Abdullah, Muhamad |
| Abdullah, Naziruddin |
| Abdullahi, Shafiu |
| Abu Afifa, Malik |
| Adawiyah, Wiwiek |
| Adhariani, Desi |
| Izzaz, Afzal |
| Ahmad Yahya, Naimah |
| Ahmad, Abu |
| Ahmad, Nurulyasmin |
| Ahmed, Essia |
| Ahmed, Essia Ries |
| Al Halbusi, Hussam |
| Alshater, Muneer |
| Alwahaishi, Saleh |
| Amin, Hanudin |
| Annuar, Hairul Azlan |
| Ansari, Nighat |
| Arshad, Mohd Anuar |
| Ascarya, Ascarya |
| Asiamah, Nestor |
| Askari shahamabad, Mahdi |
| Awang, Yunita |
| Aydin, Necati |
| Azad , Md. Abul Kalam |
| Azid, Toseef |
| Azizi, Pedram |
| Azyyati Marzukhi, Marlyana |
| Babula, Michael |
| Bachkirov, Alexandre |
| Bananuka, Juma |
| Banna, BM Hasanul |
| Barkat, Waseem |
| Basir, Siti |
| Bin-Nashwan, Saeed Awadh |
| Boachie, Christopher |
| Çalik, Abdurrahman |
| Carter, Jack |
| Chauhan, Rakhi |
| Dastooreh, Kaveh |
| Daud, Dalila |
| Dhir, Swati |
| DiRienzo, Cassandra |
| Effah, Nana Adwoa |
| Ezeh, Precious |
| Fatima, Zoha |
| Furqani, Hafas |
| Garg, Naval |
| Ghazali, Noor Azimah |
| Goel, Puneeta |
| Goswami, Meghna |
| Guidara, Dr. Achraf |
| Gwadabe, Nura |
| Harahap, Lily |
| Harsanto, Budi |
| Hasanpoor, Edris |
| Hassan, Abul |
| Hassan, M |
| Hasun, Farda |
| Herijanto, Hendy |
| Hilmiyah, Nurul |
| Hilton, Sam Kris |
| Hoque, Nazamul |
| Hoque, Nazmul |
| Hossain, Dewan |
| Hossain, Mohammad Sharif |
| Hosseini, Hengameh |
| Hosseini, Mohammad Mehdi |
| Ibrahim, Suraiya |
| Imran, Ali |
| Ismal, Rifki |
| Johari, Razana Juhaida |
| Kamaruddin, Siti Mazwin |
| Kassim, Salina |
| Khan, Abidullah |
| Khindri, Aakash |
| Kooli, Chokri |
| Kousar, Rakhshanda |
| Kumar, Satinder |
| Kusnawijaya, Eddy |
| Mahfudz, Akhmad Affandi |
| Mahipalan, Manju |
| Mahomedy, Abdulkader |
| Maiti, Moinak |
| Makhdum, Muhammad Sohail Amjad |
| Mansor, Fadillah |
| Mariyono, Joko |
| Marmat, Geeta |
| Masud, Md. Abdul Kaium |
| Mat Kamal, Siti Nuur-Ila |
| Mohammad, Jihad |
| Mohammed, Mustafa |
| Mohd Suffian, Mohd Taufik |
| Mohsin, Aminah |
| monteverde, vicente |
| Muda, Ruhaini Muda |
| Muflih, Muhammad |
| Mustafida, Rifka |
| Nartey, Edward |
| Nawaser, Khaled |
| Odera, Odhiambo |
| Oladapo, Ibrahim |
| Oniku, Ayodele |
| Othman, Akmal Aini |
| Pirzada, Kashan |
| Rab, Hifzur Rab |
| Rafique, Muhammad Zahid |
| Rahman, Farhana |
| Rahman, khalilur |
| Rahman, Md. Habibur Rahman |
| Ratnawati, Nirdukita |
| Razimi, Mohd Shahril Bin |
| Razinah, Nor |
| Rounaghi, Mohammad Mahdi |
| Ruhani, Fatima |
| Sadaf, Tahira |
| Salehi, Mahdi |
| Salin, Ahmad Saiful Azlin Puteh |
| Sarea, Adel |
| Sari, Ria |
| Serfraz, Ayesha |
| Shahimi, Shahida |
| Shaikh, Salman Ahmed |
| Shakespeare, Rodney |
| Sharofiddin , Ashurov |
| Shinkafi, Akilu |
| Soheil, Kazemian |
| Tamanni, Luqyan |
| Tanwar, Samridhi |
| Tetteh, Lexis |
| Tukamuhabwa, Benjamin |
| Ülev, Salih |
| Usman, Muhammad |
| Verma, Prachi |
| Wan Jusoh, Wan Noor Hazlina |
| Woodford, Brendon |
| Yusuf, Jibrail |
| Zainal, Nurazilah |
| Zia, Muhammad |
| Zulkhibri, Muhamed |