The purpose of this paper was to adapt the Self-Compassion Scale and Mindful Attention Awareness Scale into Greek. Self-compassion and mindfulness are increasingly used in current research and therapy, but not in Greece. This research is the first step toward achieving the expansion of mindfulness and self-compassion research in Greece. In four studies (N = 1,364), this paper evaluated the psychometric properties of the Self-Compassion Scale—Greek and the Mindful Attention Awareness Scale—Greek. Exploratory factor analyses, as well as internal consistency and test–retest analyses, were conducted. Results of the four studies confirmed that (a) the translated versions are equivalent to the original, (b) factor analyses established similar factor solutions to the English versions, (c) reliability coefficients are satisfactory (i.e., Cronbach's α coefficients and test–retests), and (d) construct validity revealed similarities between English and Greek versions, replications consistent with past research, as well as differences explained through theoretical frameworks. Therefore, both scales were accepted as valid and reliable measures for assessing self-compassion and mindfulness in Greek-speaking populations.