The XIII International Conference “Computer-aided technologies in applied mathematics” was successfully held from 7th to 9th of September, 2020, at the National Research Tomsk State University, Tomsk, Russia. The conference was organized by National Research Tomsk State University, Angarsk State Technical University and The Institute of Computational Mathematics and Mathematical Geophysics. Originally, the conference was to be held in June on Lake Baikal. But due to the COVID-19 coronavirus pandemic, the dates, venue, and format of the conference were changed. List of Program Committee, Editors, Organizing Institutions, Images are available in this pdf.