The present study aimed to explore the relationships between flow, mindfulness, and self-talk, in Iranian athletes. 112 participants with experience in competitive sports completed an questionnaire comprising the Iranin Dispositional Flow Scale, the Five Facet Mindfulness Questionnaire-short form, and the Automatic Self-Talk Questionnaire for Sports. Results confirmed the moderate, positive connection between flow and mindfulness (r = 0. 44). Moreover, linear regression analysis indicated that mindfulness appeared to significantly predict flow (F = 50. 395 [1, 211], p < 0. 001). Furthermore, negative-and positive self-talk correlated moderately with both flow (r =-0. 52 and r = 0. 59, respectively) and mindfulness (r =-0. 45 and r = 0. 23, respectively). Additionally, self-talk (negative and positive combined) significantly predicted flow and mindfulness, accounting for 51% and 22% of the variance, respectively. Investigating potential win differences in terms of dispositional flow, mindfulness, and self-talk, was a secondary aim of the present study. Significant differences were found for every variable of interest; in this sample, win appeared to demonstrate higher levels of flow, mindfulness, and positive self-talk, and lower levels of negative self-talk, in comparison to failed.