This research is aimed at forming the professional competencies of future teacher-biologists by using project-based learning technologies. The study was created in the fall semester of 2022–2023 and was carried out with the participation of 168 students. In the research, a 3-week online training was given to the participant group and this training was designed for the participant groups. When the training was completed in the research, the data collection tool was applied, delivered and collected to the participant groups participating in the study. The analysis of the data was made in the relevant programmes and the findings were added to the research in the presence of tables. As a result of the research, it was seen that the students participating in the research understood the project-based learning technologies and had high values as they expected this relationship to be established. Keywords: Project-based learning, technology, professional competence, biologist;