Rigorous peer-reviews are the basis of high-quality academic publishing. Thanks to the great efforts of our reviewers, Data was able to maintain its standards for the high quality of its published papers. Thanks to the contribution of our reviewers, in 2021, the median time to first decision was 17 days and the median time to publication was 42 days. The editors would like to extend their gratitude and recognition to the following reviewers for their precious time and dedication, regardless of whether the papers they reviewed were finally published:
| Abaspur Kazerouni, Iman | Karymbalis, Efthimios |
| Abreu, António | Kashyzadeh, Kazem Reza |
| Achilonu, Ikechukwu | Kätsch, Christoph |
| Aernouts, Michiel | Katz, Brian F. G. |
| Agnieszka, Głodowska | Kelemen, Miroslav |
| Aldieri, Alessandra | Kersten, Tobias |
| Alexandridis, Georgios | Khan, Muhammad Bashir |
| Alizadeh Kordabad, Reza | Kim, Jong-Min |
| Al-Matarneh Sattam, Mohammad Ata | Kostopoulos, Georgios |
| Almeida Mendes, Mateus Daniel | Kosztyan, Zsolt Tibor |
| Alshehri, Yasser Ali | Koutras, Thanasis |
| Amini, Hossein | Küchemann, Stefan |
| Amith, Muhammad | Kudłak, Błażej |
| Andión, Javier | Kumar, Neeraj |
| Antomarioni, Sara | Kusetogullari, Huseyin |
| Antuchevičienė, Jurgita | Kuznetsov, Serguei V. |
| Antunes, Mário | Laidig, Daniel |
| Aquilani, Barbara | Law, Rob |
| Ara, Iffat | Lazaroiu, George |
| Assari, Shervin | Leiva, Benjamin |
| Avazmohammadi, Reza | Lelli, Francesco |
| Babu, Ashwin Ramesh | Li, Side |
| Bagui, Sikha | Liao, Ran |
| Balla, Dániel | Ligęza, Paweł |
| Bariviera, Aurelio Fernandez | Lim, JongBeom |
| Bazos, Ioannis | Lin, JunLin |
| Beech, Jason | Linscott Edelen, Auralee |
| Behzad Farahani, Behzad | Lizcano Casas, David |
| Beierle, Felix | Lopes, João M. |
| Belda, José | López-Yáñez, Itzamá |
| Berntzen, Lasse | Maggi, Mario |
| Bian, Jiang | Mahmud, M. Rizaludin |
| Bieszk-Stolorz, Beata | Mainar Causapé, Alfredo J. |
| Boissy, Patrick | Maiti, Moinak |
| Bolanowski, Marek | Makarovič, Matej |
| Bonacci, Emeritus Ognjen | Manenti, Sauro |
| Borleanu, Felix | Marchiafava, Stefano |
| Borychowski, Michał | Marek, Guzek |
| Bosnjak, Rino | Marilena, Sanfilippo |
| Botezatu, Mihai Alexandru | Martínez Ibarra, Emilio |
| Botha, Iuliana | Martínez, Aurora |
| Bu, Yi | Martínez-Hinarejos, Carlos-D. |
| Buczacki, Aleksander | Martins, Bruno |
| Caccianiga, Gianluigi | Mastropietro, Alfonso |
| Cameletti, Michaela | Mattern, Eleanor |
| Cannataro, Roberto | Matuszewski, Maciej |
| Cappelli, Lucio | Mayr, Astrid |
| Carbonaro, Antonella | Medvedev, Igor |
| Catara, Antonino | Mican, Daniel |
| Centeri, Csaba | Micera, Roberto |
| Chan, K. H. Katie | Michalcova, Lenka |
| Charvat, Karel | Micheli, Marina |
| Chen, Chien‑Wen | Mihaescu, Cristian |
| Chen, Chin-Ling | Miller, Ian |
| Chen, Long-Sheng | Milošević, Milan |
| Ching, Joseph | Minutolo, Marcel |
| Chowdhury, Kamal | Mitani, Akinori |
| Christodoulakis, John | Mogas, Jordi |
| Chui, Kwok Tai | Mohammadkhah, Melika |
| Clark, Susan Spierre | Moldovan, Darie |
| Cleaves, Henderson James | Molero, David |
| Colla, Valentina | Molero, Francisco |
| Colón, Cristóbal | Moomen, Abdul-Wadood |
| Comerci, Colin | Muhamedyev, Ravil |
| Corrado, Rindone | Muric, Goran |
| Correia, Pedro Miguel Alves Ribeiro | Mynett, Arthur |
| Costa, Gianni | Nalivaiko, Anton Yu. |
| Cotfas, Liviu-Adrian | Nardi, Fernando |
| Dashtipour, Kia | Nemec Zlatolas, Lili |
| De Blas, Clara Simon | Nieschulze, Jens |
| De Frutos, Pablo | Niglio, Marcella |
| De Tommasi, Luciano | Nikiforova, Anastasija |
| De Toro, Pasquale | Nüsser, Marcus |
| Delcroix, Benoit | Okanović, Andrea |
| Deufemia, Vincenzo | Oleksa, Andrzej |
| Di Marco, Roberto | Oliveira, Anabela |
| Diaz, Melvin | Oliveira, Márcio |
| Dimitrijevic, Aleksandar | Onyutha, Charles |
| Dimuccio, Luca | Oszust, Mariusz |
| Dong, Rencai | Ouahabi, Abdeldjalil |
| Doucet, François R. | Özcan, Lütfü-Çelebi |
| Doynikova, Elena | Pääkkönen, Pekka |
| Dragoi, Marian | Pain, Jean-Christophe |
| Dunđer, Ivan | Pamucar, Dragan |
| Duran, Cristhian | Panagis, Ioannis |
| Dyson, Ashley | Park, Jaehwan |
| Dzedzickis, Andrius | Pasculli, Antonio |
| Dziechciarz, Józef | Pastor Seller, Enrique |
| Eekhout, Iris | Pavaloaia, Vasile Daniel |
| Elbattah, Mahmoud | Paweł, Dymora |
| Elger, Kirsten | Pejic Bach, Mirjana |
| Emad, G. Reza | Peña, Juan A. |
| Endresen, Dag | Petru, Michal |
| Erfurth, Christian | Pileggi, Salvatore F. |
| Fedulov, Boris N. | Piot-Lepetit, Isabelle |
| Ferreira, Aida Araújo | Piper, Andrew |
| Fetaji, Bekim | Pokharel, Gyanendra |
| Fida, Benish | Pokoradi, Laszlo |
| Firmin, Selena | Pokuri, Balaji |
| Florea, Bogdan Cristian | Porpino, Gustavo |
| Flores Romero, Juan Jose | Prinsen, Erik C. |
| Fradet, Laetitia | Ptak-Chmielewska, Aneta |
| Friedman, Jason | Qi, Guanqiu |
| Fugazza, Cristiano | Qu, Hang |
| Galpert, Deborah | Radicic, Dragana |
| Ganetsos, Theodore | Ramaprasad, Arkalgud |
| Gao, Lei | Rana, Pratip |
| García, Jesus Enrique | Razvan, Mohammadreza |
| Garcia, Ricardo | Regulski, Krzysztof |
| Garg, Harish | Requejo, Cristina |
| Garigliotti, Darío | Roldugin, Dmitry |
| Gauch, Susan | Rolland, Colette |
| Ghosh, Aritra | Rosenberg, Joshua |
| Gialelis, John | Rutkowski, Robert |
| Giglio, Carlo | Sadik-Zada, Elkhan Richard |
| Gligor, Felicia | Sahu, Netrananda |
| Glowacz, Adam | Salvi, Massimo |
| Godoy, Daniela | Santos, José Gomes Dos |
| Górecki, Tomasz | Sarasa-Cabezuelo, Antonio |
| Gotovtsev, Pavel | Sarretta, Alessandro |
| Green, Benjamin | Scheinker, Alexander |
| Greiner, David | Scholich, Klaus |
| Grigorieva, Elena A. | Serani, Andrea |
| Gülay, Arda | Sermet, Yusuf |
| Guzek, Dominika | Shafigh, Payam |
| Hamilton, Dale | Sharma, Priyanka R. |
| Han, Congzheng | Shi, Xiaoming |
| Harezlak, Katarzyna | Simionescu, Mihaela |
| Hasan, Md Mahmudul | Smahi, Abla |
| Hayes, Darren | Stach, Christoph |
| Hirmer, Pascal | Stefanovič, Pavel |
| Horvatić, Davor | Stewart, Alan V. |
| Hosseinian-Far, Amin | Stoyanova-Doycheva, Asya |
| Hssaisoune, Mohammed | Su, Bo-chiuan |
| Hssayeni, Murtadha | Su, Ruoyu |
| Hsu, Che-Chuan | Subasi, Abdulhamit |
| Huda, Quamrul | Susko, Edward |
| Ijaz, Muhammad Fazal | Tarnavsky, Elena |
| Immordino, Francesco | Teplická, Katarína |
| Inoguchi, Takashi | Tetko, Igor |
| Ioannou, Konstantinos | Torre, Carlo |
| Irina, Mocanu | Tsai, Ming-Fong |
| Isola, Gaetano | Turakhanov, Aman |
| Ivan, Pires | Van Der Merwe, Johannes Rossouw |
| Izonin, Ivan | Van Der Schaaf, Hylke |
| Jajuga, Krzysztof | Vásquez-Correa, Juan Camilo |
| Jastrzębska, Aneta | Villani, Marco |
| Jeong, Byung Yong | Vinte, Claudiu |
| Jeong, Eui Seob | Vu, Binh |
| Johnson, Daniel | Wang, Junqi |
| Juárez-Vela, Raúl | Wyffels, Francis |
| Jung, Kyu-Hwan | Xu, Chen |
| Juostas, Antanas | Yoo, Kwan-Hee |
| Kahanda, Indika | Young, Alix |
| Kanavos, Andreas | Zada, Elkhan Richard |
| Kankaanpää, Pasi | Zaitseva, Elena |
| Kanwal, Nadia | Zdravevski, Eftim |
| Kardas, Jaroslaw S. | Zeng, Wenhui |
| Karie, Nickson M. | Zhang, Guiming |
| Karoń, Grzegorz |
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