Rigorous peer-reviews are the basis of high-quality academic publishing. Due to the great efforts of our reviewers, Axioms 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 22 days, and the median time to publication was 43 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:
| A. K. Lazopoulos | Kyriakos Flouris |
| Adam Lecko | Lanre Akinyemi |
| Adam Pacławski | Laszlo Pokoradi |
| Adel Nailevich Abyzov | Lech Górniewicz |
| Adrian Gligor | Leila Marek-Crnjac |
| Alef Sterk | Lenka Mihoković |
| Aleksandr Murach | Lenny Neyt |
| Aleksandr Rakhmangulov | Lev B. Klebanov |
| Aleksandra Tutueva | Ljubiša Kočinac |
| Alessandro Oliaro | Lloyd Davis |
| Alexander V. Mantzaris | Lorentz Jäntschi |
| Alexei Sergeevich Shvedov | Lorenzo Zanelli |
| Alexey S. Eremin | Lotfi Chaari |
| Alim Sukhtayev | Lovyagin Yurii |
| Alina-Mihaela Patriciu | Luca Gemignani |
| Aliona Dreglea | Luis Enrique Valdez-Juárez |
| Allison Lewis | Luisa D’Amore |
| Amaury Hayat | Łukasz Nakonieczny |
| Ana Vukelić | M. Vicenta Ferrer |
| Anatolij Prykarpatski | Mahmoud Ibrahim |
| Andrea Scapellato | Maksim Kukushkin |
| Andreea Fulga | Manuel Alberto Martins Ferreira |
| Andrei Horvat-Marc | Manuel De La Sen |
| Andrés Carrión | Marcelina Mocanu |
| Andrey Cherstvy | Marcello Delitala |
| Andrey Morgulis | Marcelo Kaminski Lenzi |
| Andrey Zahariev | Marco Jose |
| Andriy Bandura | Marek Golasinski |
| Andriy Zagorodnyuk | Marek Hycko |
| Andrzej Bielecki | Marek Lampart |
| Apostolos Syropoulos | Marek Sawerwain |
| Arianna D’Ulizia | Maria Alessandra Ragusa |
| Arkadiusz Kawa | Maria Dobrițoiu |
| Arni S.R. Srinivasa Rao | Maria Korovina |
| Arran Fernandez | Maria L. Manca |
| Arsen Palestini | Maria Laura Delle Monache |
| Arseny Shur | Marina Resta |
| Arthur E. P. Veldman | Marinela Inta |
| Artur Kobus | Marinko Maslaric |
| Atanaska Georgieva | Marius Pislaru |
| Aviv Gibali | Mariusz Buciakowski |
| Azhar Zafar | Mariusz Pleszczyński |
| Bakhtiyor Jalilovich Kadirkulov | Mariusz Urbański |
| Balazs Toth | Marko Kostić |
| Baltazar Aguirre-Hernández | Massimo Tessarotto |
| Benoit Morel | Matthew Harrison-Trainor |
| Bernard Linsky | Matthew J. Lake |
| Branislav Randjelovic | Max Bannach |
| Brett Altschul | Mehdi Salimi |
| Brigita Ferčec | Mehmet Yavuz |
| Calogero Vetro | Merlin Simo-Tagne |
| Can Baskent | Michael (Michail) Th. Rassia |
| Chih-Wen Chang | Michael Evans |
| Ching-Lueh Chang | Michel Mehrenberger |
| Choonkil Park | Michel Nguiffo Boyom |
| Christophe Chesneau | Mieczyslaw Cichon |
| Christopher Boyd | Mikhail Babenko |
| Christos Katris | Mikhail Tkachenko |
| Christos Makris | Mimica R. Milošević |
| Constantin Udriste | Ming Li |
| Cristian Busu | Miomir Stankovic |
| Cristiana De Filippis | Mirjana Pavlović |
| Dan Tiba | Miroslav Hristov |
| Dana Smetanová | Miroslava Antić |
| Dana-Mihaela Petroșanu | Mohamed Hamdaoui |
| Dan-Cristian Dabija | Monika Kosacka-Olejnik |
| Danial Faghihi | Mostafa M. A. Khater |
| Daniela Marian | Muhammad Fazal Ijaz |
| Danijela Tuljak-Suban | Muhammed Mursaleen |
| Daniyal Haider | Mustafa Avci |
| Darja Rupnik Poklukar | Nalini Chintalapudi |
| Darjan Karabasevic | Nanjing Hao |
| David Orellana Martín | Nataliia Melnykova |
| Davor Dragicevic | Naveed Ahmed Azam |
| Dmitriy Kolyukhin | Nhon Nguyen-Thanh |
| Dorinela Costescu | Nikita Y. Lovyagin |
| Dragan Pamucar | Niklas Kolbe |
| Dumitru Baleanu | Nikola Lopac |
| Dumitru Vieru | Octav Olteanu |
| Dunhui Xiao | Oleg Gutik |
| Dusan Rakic | Oleh Romaniv |
| Edward Cartwright | Olga Chichigina |
| Elio Padoano | OPhir Nave |
| Elisabeth Longatte-Lacazedieu | Orlov Viktor Nikolaevich |
| Emanuele Rodaro | Oscar Castillo |
| Enrique G. Reyes | Oscar Valero |
| Erick Méndez | Oswaldo González-Gaxiola |
| Ernesto Zambrano-Serrano | Paolo Emilio Ricci |
| Ervin K. Lenzi | Paolo Leonetti |
| Eugen Divjak | Paolo Mason |
| Ewa Chodakowska | Paolo Mercorelli |
| Fabien Crauste | Paolo Musolino |
| Fabrizio Maturo | Papadimitriou Fivos |
| Farooq Ahmad | Patricio Ordaz |
| Farooq Gujar | Paul Popescu |
| Farrukh Maksutovich Mukhamedov | Pavlina Jordanova |
| Ferdinando Di Martino | Paweł Drąg |
| Fernando Veiga-Suárez | Pedro A. Martin Cervantes |
| Francesca Pitolli | Pedro Macedo |
| Francesco Pediconi | Petr Sváček |
| Francisco Gallego Lupiaňez | Piotr Nowak |
| Francisco Javier Garcia-Pacheco | Pyke Tin |
| Francisco Jurado | Radu Paltanea |
| Francisco Martínez González | Raimundas Vidunas |
| Francisco Ureña | Rajkumar Verma |
| François Leyvraz | Renat T. Sibatov |
| František Klimenda | Richard Kerner |
| Fumiya Okubo | Roberto Garrappa |
| Gabriella Puppo | Roberto Saia |
| Galina Ilieva | Robin Hankin |
| Geneviève Simonet | Roman Ivanovich Parovik |
| Georgi Georgiev | Roman M. Cherniha |
| Giacomo Dimarco | Ronghua Zhang |
| Gilberto Gonzalez-Parra | Saeid Jafari |
| Giordano Santilli | Sai Sidhardh |
| Giovanni Angiulli | Salissou Moutari |
| Giovanni Calvaruso | Salvatore Sessa |
| Goran Cirovic | Samad Noeiaghdam |
| Gulasekaran Rajaguru | Sansit Patnaik |
| Guoqiang Zeng | Satoshi Uchida |
| Gustavo Fernández-Muñoz | Senol Piskin |
| Gustavo Santos-García | Serena Doria |
| Gyurhan Nedzhibov | Sergei Aseev |
| Hamza Khan | Sergei Pilyugin |
| Hao Xiong | Sergey Grigor’evich Pyatkov |
| Haret Rosu | Sergey Shmarev |
| Hassen Aydi | Sergey V. Sudoplatov |
| Helbert Eduardo Espitia | Sergii Kavun |
| Heyrim Cho | Sergii Myroshnychenko |
| Hijaz Ahmad | Shahram Rezapour |
| Ho Namgung | Silviu Urziceanu |
| Houssine Zine | Slobodan Radojevic |
| Hovik Matevossian | Snezhana Hristova |
| Hui-Chin Tang | Sorin Dragomir |
| Huseyin Isik | Stefan Jovčić |
| Hussein Rappel | Stefan Tappe |
| Hyunwook Koh | Stefka Fidanova |
| Igor Andrianov | Stepan A. Tersian |
| Igor Vujović | Stephen G. Penny |
| Ilya Boykov | Stevan Pilipović |
| Ilya G. Kovalenko | Stupňanová Andrea |
| Indra Gunawan | Sun Young Cho |
| Ioannis Dassios | Susmit Bagchi |
| Ivano Colombaro | Svajone Bekesiene |
| Izhar Ahmad | Svetlozar T. Rachev |
| J. Leonel Rocha | Svetozar Margenov |
| J. Vanterler Da C. Sousa | Tatjana Dosenovic |
| Jakub Horák | Tatjana Petek |
| Jan Cieslinski | Teodor Atanackovic |
| Jan Felipe Van Diejen | Teodor Turcanu |
| Jan Mandel | Teresa Diogo |
| Jan Van Casteren | Thanin Sitthiwirattham |
| Janusz Brzdek | Theodore Andronikos |
| Janusz Matkowski | Theofanis Grammenos |
| Javier Fernandez | Thierry Gobron |
| Jean-Paul Doignon | Thomas Ernst |
| Jelena Djokić | Thomas Michelitsch |
| Jen-Chih Yao | Thyago Nepomuceno |
| Jen-yao Lee | Tibor K. Pogány |
| Jesus Enrique García | Tom Mestdag |
| Ji-huan He | Tomas Baležentis |
| Jinrong Wang | Tomasz Steifer |
| Jin-Woo Park | Tommaso Gentile |
| Joanna Raczek | Tristan Guillaume |
| João Cabral | Umar Iqbal |
| Joe Repka | Vasiliev Borisovich Vladimir |
| Jong-Chan Kim | Viorel Paleu |
| Jorge Sanchez-Ortiz | Vittorio Astarita |
| José Alberto Rodrigues | Vladimir E. Fedorov |
| José Antonio de la O. Serna | Vladimir Nikolayevich Soloviev |
| José Antonio Oller | Vladimir Vasilyev |
| José Carlos Alcantud | Wai Siong Chai |
| Jose Martin Castro Manzano | Wayne Lewis |
| José Matos | Wei Lu |
| Josef Mikeš | Wei-Lun Tsai |
| Josef Slapal | Wei-Shih Du |
| Juan Carlos Hernández-Gómez | Wieslaw A. Dudek |
| Juan Francisco Sánchez-Pérez | Wiesław Leonski |
| JuingShian Chiou | Wojciech Froelich |
| Junesang Choi | Wojciech Sałabun |
| Jun-Lin Lin | Xuefeng Zhang |
| Kanel Alexey | Yagub Sharifov |
| Kao-Yi Shen | Yan Pei |
| Karl H. Hofmann | Yanqiao Wei |
| Karl-Joachim Wirths | Yingjie Liang |
| Katarzyna Antosz | Yoritaka Iwata |
| Ketson Roberto Maximiano Dos Santos | Yosuke Kuratomi |
| Kifayat Ullah | Youngchul Bae |
| Kirkby Justin Lars | Yuri Kordyukov |
| Ki-sun Lee | Yuriy Povstenko |
| Konstantin Alexandrovich Rybakov | Yury K. Mashunin |
| Konstantin Kudryavtsev | Zbigniew Haba |
| Konstantin Zhukovsky | Zhan-Peng Yang |
| Kottakkaran Sooppy Nisar | Zhen Zhang |
| Krassimira Vlachkova | Zhiqiang Wang |
| Kudret Topyan | Zoran Vosika |
| Kuize Zhang |
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