Peer review is an essential part in the publication process, ensuring that Fractal and Fractional maintains high quality standards for its published papers. In 2017, a total of 17 papers were published in the journal. Thanks to the cooperation of our reviewers, the median time to first decision was 14 days and the median time to publication was 24 days. The editors would like to express their sincere gratitude to the following reviewers for their time and dedication in 2017:
| Abd-Elhameed, Waleed | Moroni, Monica |
| Aguilar, José Francisco Gómez | Nie, Yufeng |
| Ahmad, Fayyaz | Nieto, Juan J. |
| Atangana, Abdon | Ogata, Satoshi |
| Bazhlekova, Emilia | Olsen, Lars Ole Ronnow |
| Błasik, Marek | Ostoja-Starzewski, Martin |
| Bountis, Tassos | Otto, Andreas |
| Carlini, Maurizio | Povstenko, Yuriy |
| Cattani, Carlo | Rassias, Michael (Michail) Th. |
| Chen, Wen | Reich, Simeon |
| Chen, Xianghong | Rodino, Luigi |
| Concezzi, Moreno | Rodrigues, Maria Manuela Fernandes |
| Dassios, Ioannis K. | Rodríguez, Francisco |
| Datsko, Bohdan | Sandev, Trifce |
| Duarte-Mermoud, Manuel A. | Schwarz, Phil |
| Dubbeldam, Johan | Sequeira, Adélia |
| Fabrizio, Mauro | Simsek, Yilmaz |
| Ferras, Luís Jorge Lima | Sivasundaram, Seenith |
| Galhano, Alexandra | Spigler, Renato |
| Gallagher, John | Sumelka, Wojciech |
| Georgiou, Georgios | Tarasov, Vasily |
| Ibrahim, Rabha W. | Ushida, Akiomi |
| Ingber, Lester | Vieru, Dumitru |
| Jorgensen, Palle | Villecco, Francesco |
| Kirane, Mokhtar | Vives, Josep |
| Kobayashi, Motoyoshi | Wacławczyk, Marta |
| Lane-Serff, Gregory | Wang, Yuanqi |
| Li, Ming | Wolf, Marek |
| Li, Xuemin | Wu, Guo-Cheng |
| Liu, Da-Yan | Yamano, Takuya |
| Luchko, Yuri | Yang, Xiao-Jun |
| Machado, Tenreiro | Zorica, Dusan |
| Mainardi, Francesco |
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