Mindfulness parenting involves parents be able to pay attention to their adolescent and their own reactions to statements and behaviors of adolescents without judgmental attitude. It is also expected that parents who have greater mindfulness in their interpersonal interactions with their adolescent also children would be more likely to exhibit discipline practices which are accordance to cultural norms for effective discipline. The study aimed to evaluate Mindfulness-based parenting training on interpersonal mindfulness among mothers of adolescent girls. The study population was all of mothers of high school adolescent girls in Tehran city. Participants were selected by using multistage cluster sampling method that 50 mothers were selected randomly. They were placed into the experimental group (N=25) and control group (N=25), also they completed questionnaire of Interpersonal Mindfulness interpersonal mindfulness in parenting scale (IEM-P) before and immediately after 8-weeks training. After intervention, covariance analysis indicated significant difference between the experimental and the control groups in Interpersonal Mindfulness. The results showed that mindfulness parenting had significant effect in increasing interpersonal mindfulness in mothers of experimental group. Interpersonal Mindfulness score mean improved from 29.16 to 32.72 in the experimental group and 0.39 of variance of individual differences in mother’s interpersonal mindfulness related to mindfulness parenting training. The results showed that mindfulness-based parenting training was effective on interpersonal mindfulness in mothers of adolescent girls.