This dataset contains laboratory experimental data obtained from quasi-static double-sided fiber pullout tests performed on dog-bone UHPFRC specimens. The specimens were reinforced separately with steel fibers and PVA fibers, and the experimental program investigated the post-cracking response for different fiber counts, including 1, 4, 5, 9, and 16 fibers per specimen. For each configuration, multiple specimens were tested to assess the repeatability and variability of the pullout response. The dataset includes raw experimental records stored in TXT format, which were used for the analysis of load–displacement behavior and mechanical performance. These data support the characterization of fiber–matrix interaction and contribute to the understanding of the post-cracking behavior of UHPFRC as part of the PhD research project.