The aim of this study was to examine pre-service teachers’ readiness levels for online learning and engagement levels in the online environment in terms of various variables and to determine the relationship between readiness levels for online learning and engagement levels in the online environment. The design of the research is the correlational survey model, one of the quantitative research designs. The study group of the research consisted of pre-service teachers who were studying in the faculty of education at a state university in Turkey. In the study, a personal information form, the “Online Learning Readiness Scale” and the “Student Engagement Scale” were used as measurement tools. Within the framework of quantitative data analysis, descriptive statistical techniques, Mann-Whitney U test, Kruskal-Wallis H test and Pearson correlation technique were used. When the research findings were examined, it was seen that the pre-service teachers’ readiness for online learning was high in all dimensions; when it comes to engagement in the online environment, it was observed that they obtained high mean scores in the total scale, and the behavioral engagement and cognitive engagement dimensions, while they obtained a moderate mean score in the affective engagement dimension. In addition, it is one of the important results of the study that there was a medium-level, positive and significant relationship between pre-service teachers’ readiness levels for online learning and engagement levels in the online environment.