Introduction: Problematic pornography use (PPU) affects some individuals, causing distress and impaired functioning, and while psychotherapy is considered a first-line intervention, its efficacy remains understudied and unknown to many therapists. This review aimed to comprehensively synthesize the available evidence on psychotherapy for PPU and related problems (i.e., craving). Methods: For this meta-analytic systematic review, we conducted a systematic literature search, followed by study selection, coding, and data extraction.We then meta-analyzed the resulting studies using a random-effects model with subgroup analyses, meta-regressions, and risk of bias assessments. Results: 20 studies with 2,021 participants met the inclusion criteria. Most studies included cognitive behavioral therapy and acceptance and commitment therapy interventions. Participants receiving psychotherapy improved significantly more than controls on PPU, frequency/duration of pornography use, and sexual compulsivity, with large effect sizes, that were small for craving. Within-subject effects were also large and stable at follow-up. In addition, single-case designs meta-analyses showed clinically significant reductions in PPU, craving, and frequency/duration. We identified moderate effects for related depression symptoms. Most subgroup and meta-regression analyses adjusting for treatment and sample characteristics were not significant. Discussion: These results supports the efficacy of cognitive behavioral therapy and acceptance and commitment therapy in treating PPU and related problems. This has relevant implications for clinical practice (e.g., treating these problems with evidence-based interventions). However, these findings are limited by methodological issues, including the high risk of bias identified. To address these limitations, future research should use more rigorous methods (e.g., randomized controlled trials) and include more diverse groups.  Kulcsszavak: problematic pornography use, psychotherapy, cognitive behavioral therapy, acceptance and commitment therapy, Compulsive Sexual Behaviour Disorder