The COVID-19 pandemic has negatively affected people's wellness. It is proposed that developing acceptance and commitment therapy (ACT) based interventions that contain the essential components of self-compassion can benefit people in this process. The aim of this study is to examine the effect of ACT-based online psychoeducation programme on university students' self-compassion levels during the pandemic process. The research was conducted with a 2x3 experimental design. Personal Information Form and the Self-Compassion Scale (SCS) were used for data collection. Undergraduate students who continued their education through distance education in the 2020-2021 academic year and volunteered to participate in the announced programme constituted the sample. Participants were randomly assigned to the groups. The participants in the experimental group received an eight-session online ACT-based psychoeducation programme via Zoom application, while the participants in the control group did not receive any intervention. The findings showed that the self-compassion levels of the experimental group participants increased and this effect was maintained in the follow-up test conducted one month later. No significant difference was found in the self-compassion levels of the control group participants. The findings showed that the ACT-based online psychoeducation programme was effective in increasing the self-compassion levels of university students who continued their education online during the pandemic period.