Posttraumatic stress disorder (PTSD) is a significant issue for a substantial proportion of Australian ex-service personnel. In addition to the functional impact on individuals, PTSD can have a significant impact on intimate partner relationships. Research has demonstrated that practicing compassion and self-compassion may be an important component of psychological therapy for survivors of trauma, while also demonstrating benefits to intimate relationships. This pilot study aimed to investigate the utility of a Compassionate Mind Training intervention for ex-service personnel with PTSD and their partners. An uncontrolled, within-subjects, longitudinal design was utilized with assessment at pre-intervention, post-intervention and 3-month follow-up.Twenty-four participants attended 12 biweekly group sessions. Self-report measures of compassion, quality of life and psychological symptoms were administered at each time point. Findings demonstrated a significant reduction in fears of compassion and PTSD symptoms for ex-service personnel at 3-month follow-up and a reduction in depressive symptoms and increase in quality-of-life and social safeness at post-intervention. Additionally, significant reductions in anxiety, stress, external shame and self-criticism at 3-month follow-up were found, and couples reported significant increases in relationship satisfaction. Findings from this pilot study demonstrate promising outcomes, warranting further investigation in a larger randomized controlled trial of Compassionate Mind Training for ex-service personnel and their partners.