In this issue of Child and Adolescent Psychiatric Clinics, guest editors Drs. Paula Riggs, Jesse D. Hinckley, and J. Megan Ross bring their considerable expertise to the topic of Adolescent Cannabis Use. Marijuana use has been an ongoing problem for teens and adolescents, but with the legalization of marijuana in many parts of the U.S., accessibility is becoming greater than ever before. Marijuana use in teens can have negative physical, social, and psychological impacts, and this issue is designed to help practicing clinicians address marijuana use and abuse in their patients. Contains 13 practice-oriented topics including the impact of cannabis legalization on adolescent cannabis use; cannabis use disorder; the impact of adolescent cannabis use on neurocognitive and brain development; prevention; screening, brief, intervention, and referral to treatment; brief interventions for cannabis use disorder; and more. Provides in-depth clinical reviews on adolescent cannabis use, offering actionable insights for clinical practice. Presents the latest information on this timely, focused topic under the leadership of experienced editors in the field. Authors synthesize and distill the latest research and practice guidelines to create clinically significant, topic-based reviews.